| 169 Banning RD. – Lower Tyrone Township |
Limestone School – Clarion |
| 178 Maple St. Beaverdale |
Lincoln Coal & Coke Co. – Helen |
| 27Th Street Plant – Beaver Falls |
Lincoln Coal & Coke Co. Scottdale |
| 313 South 2nd St. – Duquesne |
Lincoln Coal & Coke Co. Waterburg |
| 3209 Auburn St. – McKeesport |
Lincoln High School – Ellwood City |
| 3M Co. – Bristol |
Lincoln Liberty Building – Philadelphia |
| 40Th & Butler Terminal – Pittsburg |
Lindberg Newtown Square |
| 4134 Greensburg Pike – Forest Hills |
Linde Air Kittanning |
| 4Th Ave. – Beaver Falls |
Linde Air Products Co. Coatesville |
| 617 Grant St. – Gallitzin |
Linde Air Products Co. Duquesne |
| 70 Lookout Ave. – Monongahela |
Linde Air Products Co. Kittanning |
| 701 Painter St. – Everson |
Linde Air Products Co. Pittsburgh |
| 76 Truck Stop – Corsica |
Linde Co. – Erie |
| 76 Truck Stop – Harrisburg |
Lindner Shoe Co. – Carlisle |
| 801 Carnegie Ave. – Johnstown |
Lindner Shoe Co. Philadelphia |
| A & A Philadelphia |
Line Co. – Braddock |
| A & P Stores – Beaver Falls |
Link Belt Co. – Colmar |
| A & P Stores – Indiana |
Link Belt Engineering Co. – Nicetown |
| A & P Stores – McKees Rocks |
Liquid Bulk Terminal |
| A & S. Wilson Co. – Pittsburgh |
Liquid Carbonic Acid Manufacturing Co. – Pittsburgh |
| A French Spring Co. – Pittsburgh |
Liquid Carbonic Corp – Philadelphia |
| A Garrison Foundry Co. – Pittsburgh |
Liquid Carbonic Corp. – Philadelphia |
| A Hill Co. – Erie |
Littell Steel – New Brighton |
| A J Cameron Co. – Philadelphia |
Little Rock – Philadelphia |
| A J Haws & Sons Ltd – Johnstown |
Little Sisters of the Poor |
| A M Byers & Co. – Pittsburgh |
Little Sisters of The Poor – Pittsburgh |
| A Moe & Co. – Philadelphia |
Lochers Green House View |
| A P Green Tarentum |
Lochiel Rolling Mill Co. – Harrisburg |
| A S G Industries Jeanette |
Lock Dam – Allegheny River |
| A T & T – Allentown |
Lock Haven Hospital – Lock Haven |
| A T & T Co. – Reading |
Lock Haven Research Learning Center – Lock Haven |
| A T T Wayne |
Lockhart Iron & Steel – Pittsburgh lockhart Iron & Steel |
| A. & P. Roberts Co. – Pencoyd |
Lockhart Iron & Steel Co. – McKees Rocks |
| A. & S. Wilson Co. – Pittsburgh |
Locomotive Works Eddystone |
| A. B. E. Airport – Allentown |
Locust Spring Colliery – Locust Gap |
| A. Barletta & Sons – Hazleton |
Loewengart Co. Inc. Tannery Div. Mercersburg |
| A. Berg Co. Philadelphia |
Loftus Engineering Co. Pittsburgh |
| A. Blumberg & Sons – Philadelphia |
Logan Iron & Steel Co. – Burnham |
| A. C. & S. – Lancaster |
Logan Iron & Steel Co. Lewistown |
| A. C. & S. Inc. – Philadelphia |
Logan Valley Mall – Altoona |
| A. C. Overholt & Co. – Broad Ford |
Lone Star Cement Corp. Nazareth |
| A. C. Overholt & Co. Broad Ford |
Lone Star Industries Inc. Nazareth |
| A. Darrah Contractors – Philadelphia |
Long Mead Iron Co. Conshohocken |
| A. Deruy – S. Bethlehem |
Long Publishing Co. – Philadelphia |
| A. E. Staley Manufacturing Co. – Corn Plant – Morrisville |
Longmead Iron Co. – Connellsville |
| A. French Spring Co. – Pittsburgh |
Long’s P & H Service – Easton |
| A. G. Vento Plumbing Co. – Greensburg |
Longs P H Service Easton |
| A. G. Vento Plumbing Co. – Greenville |
Longshoremans Union – Local 1291 – Philadelphia |
| A. Garrison Foundry Co. – Pittsburgh |
Longstreth Elementary School Philadelphia |
| A. Guckenheimer & Brothers – Freeport |
Loos & Dilworth – Philadelphia |
| A. H. Wirz, Inc. – Chester |
Loose Wiles Biscuit Co. – Pittsburgh |
| A. Hirsch Air Co. – Philadelphia |
Lorain Steel Co. – Johnstown |
| A. I. W. Frank Corp. – Exton |
Lords Bonded Rubber Co. – Erie |
| A. I. W. Frank Corp. Exton |
Loren’s Heat Treating – Philadelphia |
| A. J. Cameron Co. – Philadelphia |
Lorenz & Sons – Philadelphia |
| A. J. Cameron Co. Philadelphia |
Lorenz Heat Treating – Philadelphia |
| A. J. Haws & Sons Limited – Johnstown |
Lorenz Sons Philadelphia |
| A. J. Haws Sons Limited Johnstown |
Lormack Corp. – Schellburg |
| A. K. Garrett Co. – Philadelphia |
Los Angeles Philadelphia |
| A. K. Garrett Co. Philadelphia |
Loskos Body Shop – Daisytown |
| A. M. Byers Co. – Ambridge |
Lou Miles, Contractor Sharon |
| A. M. Byers Co. Inc. – Pittsburgh |
Louis B. Orlowitz Plumbing Supply – Philadelphia |
| A. M. Byers Co. Inc. Pittsburgh |
Louis Kraemer & Co. – Reading |
| A. M. Byers Steel Mill – Ambridge |
Lovekin Trageser Div – Philadelphia |
| A. Moe & Co. – Philadelphia |
Lovekin Water Heater Co. Home Office Philadelphia |
| A. Overholt Co. Broad Ford |
Lovell Coal Mining Co. – Portage |
| A. P. Green – Philadelphia |
Lovell Manufacturing Co. – Erie |
| A. P. Green – Tarentum |
Lower Burrell High School – Lower Burrell |
| A. P. Green Fire Brick Co. – Philadelphia |
Lower Burrell Junior High School – Lower Burrell |
| A. P. Green Plant – Philadelphia |
Lower Merion High School – Ardmore |
| A. P. Green Refractory Co. – Philadelphia |
Lower Mount Bethel |
| A. P. Roberts Co. Pencoyd |
Lower Works – Woodland |
| A. Pardee & Co. – Hazleton |
Loyalhanna School – Latrobe |
| A. S. Siter & Sons – Morton |
Lsonnebarn Sons Inc. Petrolia |
| A. S. Wilson Co. Allegheny |
LTV Sheet & Tube Midland |
| A. S. Wilson Co. Pittsburgh |
Ltv Specialty Steel Products Plant – Midland |
| A. T. & T. Solid State Technology Center |
LTV Stee South Side Plant Pittsburgh |
| A. T. T. Solid State Technology Center Leigh County |
LTV Steel Aliquippa |
| A. T. T. Technologies Allentown |
LTV Steel Ambridge |
| A. V. E. Airport – Allentown |
LTV Steel Baden |
| A. W. Cadman Manufacturing – Pittsburgh |
LTV Steel Beaver Falls |
| A. W. Cadman Manufacturing Pittsburgh |
LTV Steel Coke Plant Pittsburgh |
| A. Wilhelm Co. – Reading |
LTV Steel Hazelwood Plant Pittsburgh |
| A. Y. Michie – Philadelphia |
LTV Steel Monaca |
| A.P. Green Plant |
LTV Steel Pittsburgh |
| A.T. & T. Technologies – Allentown |
LTV Steel Rochester |
| AAA Penn Circle |
LTV Steel Southside Pittsburgh |
| AAA Washington |
Lucent Technologies Allentown |
| Abarb Corp. – Festerville |
Lucent Technologies Breinigsville |
| Abbots Dairies Inc. – Bellefonte |
Lucent Technologies Reading |
| Abbotts Dairies Inc. Belleville |
Lucent Technologies Reading |
| Abbotts Dairy – Curryville |
Lucerne Mines – Indiana |
| Abex Corp. Meadville |
Lucifer Furnaces Warrington |
| Abington – Natrona Heights |
Lucy Furnaces Co. Pittsburgh |
| Abington High School – Abington |
Ludlow Elementary School – Philadelphia |
| Abington Hospital – Abington |
Luke Fidler Colliery – Shamokin |
| Abington School District – Abington |
Lukens Iron & Steel Co. – Coatesville |
| Abrams Storage Yard Bridgeport |
Lukens Steel Co. Coatesville |
| Abroqast Bastin Co. – Allentown |
LuMax Industries Altoona |
| AC & S, Inc. Lancaster |
Lumber Yard – Townville |
| Academy of Music Broad Street Philadelphia |
Lupton Manufacturing Co. – Philadelphia |
| Academy Of The New Church – Bryn Athyn |
Luzerne County Gas & Electric – Hunlock Creek |
| Acands, Inc. – Pittsburgh |
Luzerne County Gas & Electric Co. – Luzerne County |
| Acco- Building Insulation – Lancaster |
Luzerne County Gas & Electric Humlock Creek |
| Ace Motor Co. – Philadelphia |
Luzerne Coutny Gas & Electric Co. – Plymouth |
| ACF Industries Berwick |
Lycoming Edison Co. – Wiliamsport |
| Achenbach & Butler, Inc. – Philadelphia |
Lycoming Rubber Co. Williamsport |
| Acheson Brass Foundry – Rankin |
Lykens Valley Coal Co. Lykens Valley |
| Achibald Colly – Archibald |
Lynn Heidelberg School – New Tripoli |
| Acme Dept. Store – Altoona |
Lynn Heidelberg School Tripoli |
| Acme Hardesty Industries – Philadelphia |
Lynnewood Gardens – Elkins Park |
| Acme Heat Treat, Inc – Philadelphia |
Lytle Coal Co. – Minersville |
| Acme Heat Treat, Inc. – Philadelphia |
Lytle Coal Co. Primrose |
| Acme Iron & Metal Co. – Philadelphia |
M & G Industrial – Pittsburgh |
| Acme Markets – Overbrook |
M & O Dredging McKees Rocks |
| Acme Markets – Philadelphia |
M & W H Nixon Paper Co. – Philadelphia |
| Acme Markets Warehouse – Reading |
M Miller Spring & Manufacturing Co. – Pittsburgh |
| Acme Philadelphia |
M S A Research Corp – Gallery |
| Acme Tea Co. – Philadelphia |
M Schnoll & Sons – Philadelphia |
| Acme Warehouse – Philadelphia |
M. & M. Mars, Inc. Elizabethtown |
| Acoustical Lab |
M. & W. H. Nixon Paper Co. Philadelphia |
| Acousticraft, Inc. – Connellsville |
M. H. Detrick – Fairless Hills |
| Ada Lewis Junior High School – Philadelphia |
M. H. Detrick |
| Adams Apple Products – Bendersville |
M. H. Pickering – Pittsburgh |
| Adams Mine – Irwin |
M. H. Pickering Pittsburgh |
| Adelta Manufacturing – Philadelphia |
M. L. Bayard & Co. – Philadelphia |
| Adley Express Co. – Philadelphia |
M. L. Clothier Villa Nova |
| Administrative Building – Papago Park |
M. S. A. Research Center – Callery |
| Adrian Furnace – Dubois |
M. Schnoll & Sons – Philadelphia |
| Advanced Specialty Co. – Lansdale |
M. T. Seakite – Chester |
| AEC Uranium Plant – Paducah, KY |
M. W. Kellogg Co. Williamsport |
| Aero Supply Manufacturing – Corry |
Mabel Furnace – Sharpsville |
| Aetna Chemical Co. – Carnegie |
Mac- Co. Service Pittsburgh |
| Aetna Chemical Co. – Oakdale |
Mac Service, Inc. – Wilson |
| Aetna Explosives Co. – Emporium |
Mac Service, Inc. Windber |
| Aetna Explosives Co. – Mt. Union |
Macaw Brothers Norwood Station |
| Aetna Standard – Ellwood City |
Mach & Boiler Works |
| Aetna Steel Product Corp. – Allentown |
Mach Trucks, Inc. – Allentown |
| Aggregates Equipment Co. – Leola |
Machine Shop Altoona |
| Aiken Medical Building – Pittsburgh |
Machold & Riddell – Philadelphia |
| Air Master – Philadelphia |
Mack Axe Works – Beaver Falls |
| Air Production Sales – Johnstown |
Mack Manufacturing Corp. – Allentown |
| Air Products & Chemicals – Allentown |
Mack Truck – Allentown |
| Air Products Co. – Hometown |
Mack Truck Mackungie |
| Air Products Co. Chemicals Allentown |
Mack Warehouse – Philadelphia |
| Air Products Co. Emmaus |
Mackintosh Hemphill – Midland |
| Air Products Co. Glassmeyer |
Mackintosh Hemphill & Co. Pittsburgh |
| Air Products Co. Hometown |
Mackintosh-Hemphill Co. – Pittsburgh |
| Air Products Co. Pittsburgh |
MacMurray High School – MacMurray |
| Air Reduction Co. – Johnstown |
MacMurray Middle School – MacMurray |
| Air Reduction Plant – Bethlehem |
Maddock & Co. – Bala Cynwyd |
| Air Reduction Sales Co. Bethlehem |
Madonna Grade School – New Castle |
| Air Reduction Sales Co. Butler |
Magazine Lumber Co. – Carbondale |
| Air Reduction Sales Co. Enola |
Magazine Lumber Co. Cardale |
| Airco – Butler |
Magee Carpet Co. Building 50 Bloomsburg |
| Airco – Monaca |
Magee Carpet Co. Pipe Shop Bloomsburg |
| Airco Speer Carbon Products – Saint Marys |
Magee Women’s Hospital – Pittsburgh |
| Airforce Base – Pittsburgh |
Maginn & Lewis – Pittsburgh |
| Airmaster Inc – Philadelphia |
Magnetic Springs Railway Co. |
| Airport Honda – Moon Township |
Mahandy Area Middle School – Mahandy City |
| Ajax Ironworks – Corry |
Mahanoy Area Education Complex – Mahanoy City |
| Ajax Metals Co. – Philadelphia |
Mahanoy City Water Co. – Girard Point |
| Ajax Rocking Furnance – Leetsdale |
Mahanoy Plane |
| Ak Steel – Butler |
Mahoning Dam – Armstrong |
| Alamogordo Lumber Co. – Scranton |
Mahoning Rolling Mill Co. – Danville |
| Alan Wood Iron & Steel Co. – Connellsville |
Mahoning Valley Iron Co. – Pittsburgh |
| Alan Wood Iron Steel Co. Steel Department Conshohocken |
Mahoningtown Shops – New Castle |
| Alan Wood Iron Steel Co. Swedeland |
Main Street Office Complex – Johnstown |
| Alan Wood Steel Co. – Ivy Rock |
Mains Service – Sutterville |
| Alan Wood Steel Co. – Philadelphia |
Maintenance & Engineering Corp. – Pittsburg |
| Alan Wood Steel CO. Norristown |
Majestic Apartment House – Philadelphia |
| Albert Stover – Kintersville |
Makefield Elementary Yardley |
| Albright Coal Co. – Llewellyn |
Mall – Washington |
| Albright Coal Co. Pottsville |
Mall – Williamsport |
| Albright College – Reading |
Mall Office Building – Philadelphia |
| Alcania Tin Plate Co. – Avonmore |
Malsbary Manufacturing Co. Uniontown |
| Alco Drywall Turtle Creek |
Malthby Colliery – Wyoming |
| Alcoa – Cressona |
Mammoth Plant Mammoth Station |
| Alcoa- Aluminum Co. Of America – Lancaster |
Mamoth Plant |
| Alcoa Aluminum Rolled Products Plant – Lancaster |
Manayunk Philadelphia |
| Alcoa Building – Pittsburgh |
Manchester Station – Pittsburgh |
| Alcoa Co. Canonsburg |
Manganese Steel Forge Co. – Philadelphia |
| Alcoa CO. Cressona |
Manhattan Slate Co. – Slatington |
| Alcoa Co. Glassmere |
Mann Brothers – Harrisburg |
| Alcoa Co. Lebanon |
Manor Brick Crafters Inc. New Oxford |
| Alcoa Co. Leechburg |
Mansfield State College – Mansfield |
| Alcoa Co. McKees Rocks |
Manufacturing Facility Ambridge |
| Alcoa Co. Merwin |
Manufacturing Gas Co. – Washington |
| Alcoa Co. New Castle |
Manufacturing Plant |
| Alcoa Co. New Kensington |
Maple Ridge School – Somerset |
| Alcoa Co. Pittsburgh |
Maple St. Beaverdale |
| Alcoa Laboratory – Pittsburgh |
Marathon Corp. Lester |
| Alcoa Laboratory New Kensington |
Marcal Paper Mills, Inc. – Philadelphia |
| Alcoa Research Laboratories – New Kensington |
Marck Sharp Dohme Inc. Mulford Plant Philadelphia |
| Alcoa Research Labs – Pittsburgh |
Marcus Hook – Lester |
| Alcoa Technical Center Alcoa Center |
Marcus Hook Plant – Maple Glen |
| Alcoa Technical Center Merwin |
Marcus Hook Plant Marcus Hook |
| Alcoa, Cressona Work Cressona |
Marcus Hook Refinery – Maple Glen |
| Alcoa-Reynolds Metals – Canonsburg |
Marcus Hook Refinery Chester |
| Alcoa-Reynolds Metals- Glassmere |
Marcus Hook Refinery Marcus Hook |
| Aldan Borough |
Marcus, Ruth & Jerome Rendering Plant – McKees Rocks |
| Alden Coal Co. Alden |
Marienville Glass Plant – Clarion |
| Aldon Rug Mills – Lenni |
Marietta Carpet Plant – Marietta |
| Alequippa Steel Co. – Pittsburgh |
Marietta Metal Products Corp. – Marietta |
| Alert Co. – Chester |
Marietta Metal Products Corp. – Philadelphia |
| Alex Crow & Son – Philadelphia |
Marine America Corp Bryn Mawr |
| Alexander Brothers Philadelphia |
Marine Corps Recruiting Depot |
| Alexander Good Elementary School – York |
Marine Corps Supply – Basement |
| Alexander Plumbing Co. – Pittsburgh |
Marine Leader Chester |
| Algonquin Chemical Co. – Hamburg |
Marinelli Bakery Philadelphia |
| Algonquin Coal Co. – Miners Mills |
Maritime Supply Co. Philadelphia |
| Algonquin Coal Co. – Wilkes Barre |
Marker & Sons – McKeesport |
| Aliquippa & Southern RR – Aliquippa |
Marks Brothers – Philadelphia |
| Aliquippa Hospital – Aliquippa |
Marks Wyant Plumbing Heating Chalfont |
| Aliquippa Methodist Church – Aliquippa |
Marlsbary Manufacturing Co. – Union City |
| Aliquippa Southern Railroad Aliquippa |
Marlsbary Manufacturing Co. Uniontown |
| Aliquippa Steel Co. – Pittsburgh |
Marlsbury Plant – Uniontown |
| Aliquippa Welding Service Aliquippa |
Marmon Keystone Pipe Supply – Butler |
| Aliquippa Works – Woodlawn PA |
Marple Township Delaware County |
| Aliquippa Works -Aliquippa |
Marquette Cement – Nequehoning |
| Aliquippa Works Mill Pipe Shop Aliquippa |
Marquette Cement Manufacturing Co. – Pittsburgh |
| Aliquippa Works North Mill Aliquippa |
Marquette Cement Manufacturing Co. Neville Township |
| Aliquippa Works Pipe Shop Station No. 7 Aliquippa |
Marquette Cement Neville Island Pittsburgh |
| Aliquippa Works Supply Department Aliquippa |
Marquette Cement Pittsburgh |
| Aliquippa Works Truck Station Aliquippa |
Marriott Hotel – Montour Exit – Moon Twp |
| Aliquippa Works Woodlawn |
Marsden T J Co. – Pottsville |
| Alky Feed System Trainer Philadelphia |
Marsh Plate Glass Co. – Walton |
| Alky Feed System, Trainer Philadelphia |
Marshall Brothers & Co. – Newport |
| All Clad Metal Crafters – Washington |
Marshall Brothers & Co. Philadelphia |
| All State Insurance Co. Office Building Tredyffrin Township |
Marshall Kennedy Co. – Pittsburgh |
| Allan Wood Iron & Steel Co. Ivy Rock |
Marshall Kennedy Co. Allegheny |
| Alleghany Airport – Pittsburgh |
Marshalsea Four Arm – Pittsburgh |
| Alleghany Ludlum Steel – Clairton |
Marshalsea Four Arm Pittsburgh |
| Alleghany Power Co. – Courtney |
Martin & Nettrour Contracting Pittsburgh |
| Allegheney County Home For Destitute – Pittsburgh |
Martin & W H Nixon – Philadelphia |
| Allegheny Airlines Terminal – Pittsburgh |
Martin & W. H. Nixon Manayunk |
| Allegheny Airport, Pittsburgh Airport – Pittsburgh |
Martin & W.H. Nixon – Philadelphia |
| Allegheny Boiler & Tube – Versailles |
Martin & William H. Nixon Paper Co. Penloyd |
| Allegheny Brick Creighton |
Martin Luther King Junior School – Philadelphia |
| Allegheny By-Product Coke Co. – Glassport |
Martin Luther King School – Philadelphia |
| Allegheny Cemetery – Lawrenceville |
Martins Creek Power Plant – Martins Creek |
| Allegheny Chemical – Nequehoning |
Martins Creek Power Station – Martins Creek |
| Allegheny Chemical – Neville Island |
Martins Creek Powerhouse Martins Creek |
| Allegheny City Electric Light Co. Allegheny |
Martins Creek, P.P.L. – Stroudsburg |
| Allegheny Co. Steam Heating Co. – Pittsburgh |
Martins Hatchery Poultry Farms, Inc. Lancaster |
| Allegheny College – Meadville |
Marx Toy Factory – Erie |
| Allegheny County Airport – Mifflin |
Mary Immaculate Seminary Northampton |
| Allegheny County Home – Woodville |
Mary St – Hermitage |
| Allegheny County Home For Destitute – Pittsburgh |
Mary Street Project – Kingston |
| Allegheny County Institution District – Woodville |
Mary Wood College – Scranton |
| Allegheny County Light Co. – Pittsburgh |
Maryland Coal Co. – Hazleton |
| Allegheny County Poor Farm – Woodville |
Maryland Coal Co. Mary D |
| Allegheny County Sanitary Authority Pittsburgh |
Maryland Coal Co. Of Pennsylvania – St. Michael |
| Allegheny County Steam Heating Co. Storeroom Pittsburgh |
Maryland Coal Co. Philadelphia |
| Allegheny County Steam Heating Stanwix Plant Pittsburgh |
Maryland Coal Co. South Fork |
| Allegheny County Workhouse Blawnox |
Maryland Coal Co. Tuscarora |
| Allegheny County Workhouse Claremont |
Maryland Steel Co. – Philadelphia |
| Allegheny County Workhouse Hoboken |
Marywood College – Kingston |
| Allegheny County Workhouse Pittsburgh |
Mashuda Corp. – Evans City |
| Allegheny Energy Courtney |
Masland Duraleather Co. – Philadelphia |
| Allegheny Energy Kittanning |
Maslin Rug Factory – Carlisle |
| Allegheny Energy Service Corp. Ft. Martin Greensburg |
Masonic Homes New Recreation Building Elizabethtown |
| Allegheny Energy Service Corp. Rivesville Greensburg |
Masonic Temple – Pottstown |
| Allegheny Energy Service Corp. Willow Island Greensburg |
Masonry Construction Co. – Philadelphia |
| Allegheny Energy Supply Co. Courtney |
Masonry Inc. – Carnegie |
| Allegheny Energy Supply Co. Greensburg |
Masontown Brewing Co. Masontown |
| Allegheny Energy Supply Co. Masontown |
Masontown Bridge, Hatfield Power Station – Masontown |
| Allegheny Energy Supply Co. Springdale |
Masontown Bridge, Power Station Monongahela |
| Allegheny Furnace – Altoona |
Masontown Jr. High School – Masontown |
| Allegheny Gas Co. – Allegheny City |
Mather Co. – Toledo |
| Allegheny Gas Co. – Roulette |
Mather Coal – Washington |
| Allegheny Gasket – Bethelport |
Mather Collieries – Rices Landing |
| Allegheny Gasket Library |
Mathis Shipyard |
| Allegheny General Hospital – Pittsburgh |
Mathis Shipyard – Philadelphia |
| Allegheny Graphic – Kittanning |
Matthew S. Lewis Co. – Canonsburg |
| Allegheny Heating Co. Allegheny |
Matthews Conveyor – Ellwood City |
| Allegheny Industrial Supply – Tarentum |
Matthiessen & Hegeler Zinc Co. – Elrama |
| Allegheny Insulation Co. Millvale & Pittsburgh |
Mauch Chunk Crystal Ice Co. – Mauch Chunk |
| Allegheny Label- Cheswick |
Mauch Chunk H. Power & Electric Light Co. – Mauch Chunk |
| Allegheny Ludlum Leechburg |
Mauch Chunk Lehighton & Slatington Railway Co. – Allentown |
| Allegheny Ludlum Steel Corp. Bagdad |
Mauch Chunk Lehighton & Slatington Railway Co. – Mauch Chunk |
| Allegheny Ludlum Steel Corp. Brackenridge |
Max & Levy Building – Philadelphia |
| Allegheny Ludlum Steel Corp. Brakenridge |
Max Brockton Textile Co. – Philadelphia |
| Allegheny Ludlum Steel Corp. Clairton |
Maxton Chester |
| Allegheny Ludlum Steel Corp. Leechburg |
Maxwell Colliery, #20 Ashley |
| Allegheny Ludlum Steel Corp. Natrona Heights |
Maxwell Lock #5 – Monongahela River, Monongahela |
| Allegheny Ludlum Steel Corp. Tarentum |
Maxwell School – Greensburg |
| Allegheny Ludlum Steel Corp. Vandergrift |
Mayer Body Corp. – Liberty |
| Allegheny Ludlum Steel Corp. Washington |
McAdoo Elementary School – McAdoo |
| Allegheny Ludlum Steel Mold Preparatory Building Brackenridge |
McArdle & Cooney Inc. – Philadelphia |
| Allegheny Ludlum Technologies – Latrobe |
McAvey Brick Co. – Phoenixville |
| Allegheny Plastics Co. – Coraopolis |
Mccahan Sugar Refining & Molasses Co. – Philadelphia |
| Allegheny Plate Glass Co. – Glassmere |
McCandless Township Municipal – McCandless |
| Allegheny Plate Glass Co. Hite |
McCaniel & Harvey Philadelphia |
| Allegheny Power – Greensburg |
Mccann Shields Paint Co. – Pittsburgh |
| Allegheny Power – Kittanning |
McCarls – Altoona |
| Allegheny Power – Leetsdale |
Mccarter Iron – Norristown |
| Allegheny Power Co – Hatfield Ferry Station – Masontown |
Mccarter Ironworks – Morristown |
| Allegheny Power System, Inc. Masontown |
Mccarters Iron – Norristown |
| Allegheny Refining Co – Verona |
McCermant Nissan – Allison Park |
| Allegheny Shops Allegheny |
Mcclair, Brooks & Co. – Scranton |
| Allegheny Steel Co. Brackenridge |
McClaskey & Co. – Philadelphia |
| Allegheny Valley Hospital – Natrona Heights |
McClave Brooks & Co. Scranton |
| Allegheny Valley Street Railway Co. – Pittsburgh |
Mcclellan Storage Yard – McClellan |
| Allegheny Valley Street Railway Co. Tarentum |
McClenaghan Corp. – Hollidaysburg |
| Allegheny Valley Water Co. Tarentum |
McClintic- Marshall Construction Co. Carnegie |
| Allegherry County Light Co. – Pittsburgh |
McClintic- Marshall Construction Co. Pottstown |
| Allen Laundry – Allentown |
Mccloskey Construction – Philadelphia |
| Allen Products Co. – Allentown |
Mccloskey Varnish Co. – Philadelphia |
| Allen Sherman Hoff Co. – Hamburg |
McClure Co. – Washington |
| Allen Sherman Hoff Co. Wynnewood |
McConnell Asbestos & Covering Co. – Etna |
| Allen Stevens Co. – Hazleton |
McConnellsburg Medical Center – McConnellsburg |
| Allen, Laundry Allentown |
McConway & Torley Corp. – Pittsburgh |
| Allentown & Kurtztown Traction Co. – Allentown |
Mccorkel Homes – Carlisle |
| Allentown- Bethlehem Gas Co. Allentown |
McCowell Paper Mill Co. Manayunk |
| Allentown High Rise – Allentown |
Mccracken Stark & Co. – Philadelphia |
| Allentown High School – Allentown |
Mccreary Tire & Rubber Co. – Indiana |
| Allentown Hospital – Allentown |
McCreary Tires – Indiana |
| Allentown Portland Cement Co. – Allentown |
McCrosky Tool & Dye – Meadville |
| Allentown Portland Cement Co. – Evansville |
McCullough Iron Co. – Philadelphia |
| Allentown Rapid Service Ice Co. – Allentown |
McCusker T J Inc. W. Mifflin |
| Allentown State Hospital – Allentown |
McDaniel & Harvey – Philadelphia |
| Allentown Water Works – Allentown |
McDowell Paper Co. – Manayunk |
| Allentown-Bethlehem Gas Co. – Allentown |
McEnery Co. – Erie |
| Allenwood Steel – Norristown |
McFadden James E Inc. Philadelphia |
| Allenwood Steel Co. Clearfield |
McGraw Edison Co – Pittsburgh |
| Allenwood Steel Co. Sweedeland |
McGraw- Edison Co. Canonsburg |
| Allenwood Steel Conshohocken |
McGraw Edison Co. Lawrenceville |
| Allenwood Steel Norristown |
McGraw Edison Co. Pittsburgh |
| Allenwood Steel Phoenixville |
McGraw Edison Co. Power Systems Div Canonsburg |
| Allianceware – Somerset |
McGraw Edison Co. Washington |
| Allied Chemical – Maple Glen |
McGraw Edison Power Systems Division – Canonsburg |
| Allied Chemical – Newell |
Mcgrew Parkinson & Co. – Monongahela |
| Allied Chemical & Dye Corp. Frankford |
Mcguffey School – Bridgeville |
| Allied Chemical & Dye Corp. Philadelphia |
Mcguffy School Taylorstown |
| Allied Chemical Bridesburg Philadelphia |
Mcguinnes Co. – Pittsburgh |
| Allied Chemical Bridge Street Philadelphia |
Mcintosh Co. – Midland |
| Allied Chemical Co. Frankford Plant Philadelphia |
McKay Co. – York |
| Allied Chemical Corp. & Dye Corp. Newell |
McKay Corp. York |
| Allied Chemical Corp. Bethlehem |
McKean Plant – Farmers Valley |
| Allied Chemical Corp. Bridgesburg |
McKean Plant Farmers Valley |
| Allied Chemical Corp. Philadelphia |
McKean, Newhall & Borie – Philadelphia |
| Allied Chemical Corp. Sunbury |
McKee Division of Thatcher Glass – Jeannette |
| Allied Chemical Corp. Youngstown |
McKee Glass Jeannette |
| Allied Chemical Dye Corp. Arrett Division Philadelphia |
McKees Rocks Ind. Enterprises – McKees Rocks |
| Allied Chemical Dye Corp. Barrett Division Philadelphia |
McKeesport & Youghiogheny Ice Co. – McKeesport |
| Allied Chemical Dye Corp. Frankford |
McKeesport Coating Co. – McKeesport |
| Allied Chemical Dye Corp. New Phenol Plant Philadelphia |
McKeesport Hospital – McKeesport |
| Allied Chemical Marcus Hook |
McKeesport Manufacturing Co. – McKeesport |
| Allied Chemical Newell |
McKeesport Moose – McKeesport |
| Allied Chemical Philadelphia |
McKeesport Sewage Plant – McKeesport |
| Allied Chemical Plant |
McKeesport Tin Plate Co. – McKeesport |
| Allied Chemical Plant – Philadelphia |
McKeesport Water & Light Co. – McKeesport |
| Allied Mills, Inc. – Everson |
McKeesport Water Purification Works – McKeesport |
| Allied Services Handicapped – Scranton |
McKeesport Works – McKeesport |
| Allied Signal – Philadelphia |
McKinley Elementary School – York |
| Allied Signal Chemical Plant – Frankford |
McKinney Manufacturing Co. Allegheny |
| Allis-Chalmers Manufacturing Co. – York |
McKnight Lanes North Hills |
| Allis-Chalmers Manufacturing Co. Manchester |
Mclaughlin Brothers – Philadelphia |
| Allis-Chalmers York |
Mclean Newhall & Borie – Philadelphia |
| Alloy Propeller Co. – Zeleinople |
McMahan Sugar Refining & Molasses Co. Philadelphia |
| Alloy Rod Plant – Hanover |
McMann Dairy – Altoona |
| Alloy Rods Co. & Chemetron Corp. Hanover |
Meadowlands Suzuki – Meadowlands |
| Alloy Rods Co. & Chemetron Corp. York |
Meadowvale School – Johnstown |
| Alloy Steel – Southampton |
Meadville City Hall – Meadville |
| Allstate Distributors Inc – Sharon |
Meadville Forging Co. Meadville |
| Alon Engineering Corp. Pittsburgh |
Meadville Precision – Meadville |
| Alon Engineering, Inc. – Creighton |
Meadville Tribune – Meadville |
| Alpha Portland Cement Co. – Easton |
Meata Machine Co – New Castle |
| Alpha Portland Cement Co. Howells |
Mechanical Insulation Co. – Lester |
| Alpha Portland Cement Co. Martins Creek |
Mechanical Insulation Co. Philadelphia |
| Alpha Portland Cement Co. MIll #4 Martins Creek |
Mechanical Insulation Co. Plymouth Meeting |
| Alpha Portland Cement Co. Pittsburgh |
Medal Distributing Co. – Sharon |
| Alpine Knitting Mills – Pittston |
Medford’s Inc. – Chester |
| Althouse Division – Gibraltor |
Medical College of Pennsylvania School – Philadelphia |
| Altman Farm – Donegal |
Medium Voltage Swgr. Department – Philadelphia |
| Altman Store, Lancaster Pk. & Iven Rd. – Quarryville |
Medusa Cement Co. – York |
| Altoona & Logan Valley Electric Railway – Altoona |
Medusa Portland Cement Co. – Wampum |
| Altoona Area School District – Altoona |
Medusa Portland Cement Co. York |
| Altoona Car Shops – Altoona |
Megargee Paper Co. – Edgely |
| Altoona General Hospital – Altoona |
Megargee Paper Mills – Tullytown |
| Altoona Mall – Altoona |
Meijers Stores – Pennsylvania |
| Altoona Pipe & Steel Supply Co. Altoona |
Meili & Worthington – Hatboro |
| Altoona Vocational Technology High School – Altoona |
Melcroft Coal Co. Melcroft |
| Alum Creek Township |
Mellon Arena – Pittsburgh |
| Aluminex, Inc. Reading |
Mellon Bank – Latrobe |
| Aluminum Co. Of America – Cressona |
Mellon Bank – Ligonier |
| Aluminum Co. Of America, Aluminum Plant – Erie |
Mellon Bank – Oakland |
| Aluminum Corp. of America Cressona |
Mellon Bank – Washington |
| Aluminum Corp. of America Lancaster |
Mellon Bank, Old USS Building – Pittsburgh |
| Aluminum Corp. of America Lebanon |
Mellon Institute of Industrial Research – Pittsburgh |
| Aluminum Corp. of America Logans Ferry |
Melville Corbett Co. Kaulmont, Elk County |
| Aluminum Corp. of America Merwin |
Memorial Hospital – Boiler Room – Johnstown |
| Aluminum Corp. of America New Kensington |
Memphis Philadelphia |
| Aluminum Corp. of America Pittsburgh |
Mens House Of Detention – Philadelphia |
| Aluminum Smelting Corp. – Philadelphia |
Men’s House of Detention Prison |
| Alvernia College – Millmont |
Mercer Alloys Greenville |
| Am Byers Co. Inc – Pittsburgh |
Mercer County Courthouse – Mercer |
| Am Byers Steel Mill, Ambridge |
Mercer County Light Co. – Greensburg |
| AM Department – Midldletown |
Mercer High School – Mercer |
| AM Department Middletown |
Mercer Lime & Stone Co. Pittsburgh |
| AM Gas Electric Co. – Philadelphia |
Mercersburg Tannery Div. Mercersburg |
| Amalgamated Silk Corp. – Allentown |
Merchant Shipbuilding Corp. – Bristol |
| Amber Realty Co. – Philadelphia |
Merchants Coal Co. – Merchants Coal Co. |
| Ambric Testing & Engineer Philadelphia |
Merchants Coal Co. Of Pennsylvania – Bosewell |
| Ambridge Plant – Ambridge |
Merchants Coal Co. Stoyestown |
| Ambridge Plant |
Merchants Ship Building Corp. Bristol |
| Ambrose Augusterfer Corp. – Hollidaysburg |
Merck & Co. – Lansdale |
| Amchem Products Inc. – Ambler |
Merck & Co. Building #2 Point |
| Amer Pipe Manufacturing Co. – Philadelphia |
Merck & Co. Danville |
| Amer Sheet & Tin Plate Co. – Pittsburgh |
Merck & Co. Inc. – Riverside |
| Amer Sheet Steel Co. – Pittsburgh |
Merck & Co. Lansdale |
| Amer Steel Hoop Co. – Pittsburgh |
Merck & Co. Riverside Borough |
| Amergen Energy Co. Llc, T. M. I. #1 & 2 Middletown |
Merck & Co. Riverside |
| America Olean Tile Co. Landale |
Merck Chemical – Danville |
| America Park Pittsburgh |
Merck Sharpe Dohme Building 65 Point |
| America Park Workers – Pittsburgh |
Merck, Sharpe & Dohme |
| America S. & W. Co. – Pittsburgh |
Mercy Douglas Hospital – Philadelphia |
| America Sheet Steel Co. – Pittsburgh |
Mercy Hospital – Altoona |
| America Sheet Tin Plate Co. – Pittsburgh |
Mercy-Douglass Hospital – Philadelphia |
| America Steel & Wire Co. – Beaver Falls |
Merion & Radnor Gas & Electric Co. Wayne |
| America Steel Hoop Co. – Pittsburgh |
Mermount Gardens – Bryn Mawr |
| America Water Works & Guarantee Co. – Pittsburgh |
Merrick Chemical Plant Danville |
| Americal Betumals & Asphalt Co. – Springdale |
Merritt Chapman & Scott – Milton |
| American Aniline Products Co. – Lock Haven |
Messinger Bearings, Inc. Philadelphia |
| American Asbestos – Norristown |
Mesta Machine Co. – Homer City |
| American Asbestos Textile Co. – Norristown |
Mesta Machine Co. New Castle |
| American Astronaut – Chester |
Mesta Machine Co. Pittsburgh |
| American Austin Car Co. – Butler |
Mesta Machine Steel Machinery Manu. Plant – Homer City |
| American Axe & Tool Co. – Beaver Falls |
Metal Bank of America Philadelphia |
| American Axe & Tool Co. Glassport |
Metal Distributing Co. – Sharon |
| American Bank – Lafayette |
Metal Treating Co. Pittsburgh |
| American Bank Note Co. – Philadelphia |
Metals Division Near Greensburg |
| American Bantam Car Co. – Butler |
Metalweld, Inc. Oaks |
| American Baptist Publication Society – Philadelphia |
Methodist Church – Speers |
| American Bearing Co. – Meadville |
Metro Glass – Washington |
| American Brake Shoe Co. National Bearing Division Meadville |
Metropolitan Brick, Darlington Rd – Beaver |
| American Brake Shoe Co. New Castle |
Metropolitan Edison Co- Portland Generating Station – Portland |
| American Brake Shoe Factory – Meadowland |
Metropolitan Edison Co. Dock St. Station Easton |
| American Bridge Co. Ambridge |
Metropolitan Edison Co. Eyler Station Storehouse Reading |
| American Bridge Co. Clairton |
Metropolitan Edison Co. Generating Station Unit #1 & #2 Portland |
| American Bridge Co. Economy |
Metropolitan Edison Co. Homer City |
| American Bridge Co. Lawrenceville |
Metropolitan Edison Co. Portland |
| American Bridge Co. Neville Island |
Metropolitan Edison Co. Reading |
| American Bridge Co. Pencoyd |
Metropolitan Edison Co. Three Mile Island – Middletown |
| American Bridge Co. Philadelphia |
Metropolitan Edison Co. Titus Station Reading |
| American Bridge Co. Pittsburgh |
Metropolitan Edison Co. Turbine Repair Philadelphia |
| American Bridge Division Northampton |
Metropolitan Edison Co. Upper Mount Bethel |
| American Bridge Division of U. S. Steel Ambridge |
Metropolitan Edison Co. Williamsburg |
| American Bridge Division of U. S. Steel Corp. Pittsburgh |
Metropolitan Edison Power Brunners Island York Haven |
| American Bridge Leetsdale |
Metropolitan Edison Power Plant – Portland |
| American Bridge Shipyard |
Metropolitan Edison- Tmi Harrisburg |
| American Bridge Shipyard – Pittsburgh |
Metropolitan Edison-Tmi – Harrisburg |
| American Can Co. Chambersburg |
Metropolitan Hospital – Philadelphia |
| American Can Co. Eaton |
Metropolitan Life Insurance Building – Johnstown |
| American Can Co. Fairless Hills |
Meyer Zausner Inc. – New Holland |
| American Can Co. Fairless |
Meyers Tavern Elizabeth |
| American Can Co. Morrisville |
Meyersdale Jr.-Sr. High School – Meyersdale |
| American Can Co. Palmar Street Philadelphia |
Michael Baker World Headquarters – Beaver |
| American Can Co. Paper Mill Pennington, AL |
Michael Flynn Manufacturing – Philadelphia |
| American Can Co. Pennington, AL |
Michigan Chemical Co. – Pittsburgh |
| American Car & Foundry – Wilkes Barre |
Michigan Limestone – Brady |
| American Car & Foundry Co. – Berwick |
Michigan Limestone & Chemical – Annandale |
| American Car & Foundry Co. Milton |
Middle Creek Electric Co. – Sunbury |
| American Chain & Cable – Braddock |
Middletown Air Force Base – Harrisburg |
| American Chain & Cable Co. – Reading |
Middletown Car Co. – Middletown |
| American Chain & Cable Co. – York |
Middletown Car Works Middletown |
| American Chain Cable Monessen |
Middletown Elementary School – Langehorne |
| American Chain Cable- York |
Middletown Elementary School Middletown Twshp |
| American Chain Co. York |
Middletown School – Bornstein |
| American Cigar Co. – Philadelphia |
MidGeneration Homer City |
| American Clean Tile Lansdale |
Midland Ross Corp. Pittsburgh |
| American Coke Co. – Lambert |
Midland Ross Sharon |
| American Coke Co. Pittsburgh |
Midland Steel – Beaver Falls |
| American Cyamid – Pace, FL |
Midland Steel Co. – Midland |
| American Cyanamid Co. Bessemer |
Midland Works – Midland |
| American Cyanamid Co. Bridgeville |
Midland-Ross Corp – Pittsburgh |
| American Cyanamid Co. Hughstown |
Miduale-Heppenstahl – Philadelphia |
| American Cyanamid Co. Paa Plant Bridgeville |
Midvale Co. Nicetown, Philadelphia |
| American Dredge – Chester |
Midvale Co. Philadelphia |
| American Dredging – Philadelphia |
Midvale Heppenstall Co. – Eddystone |
| American Dyewood Co. – Chester |
Midvale Heppenstall Co. Philadelphia |
| American Eagle Outfitters – Warrendale |
Midvale Steel & Ordnance Co. Nicetown |
| American Electronics Lab Colmar |
Midvale Steel & Ordnance Co. Philadelphia |
| American Engineering Co. – Philadelphia |
Midvale Steel Co. – Nicetown |
| American Gas & Eclectic Co. – Philadelphia |
Midvalee Heppenstall Co. Philadelphia |
| American Gas & Electric Co. – Chester |
Midvalley Coal Co. Centralia Station |
| American Gas & Electric Co. – Coxton |
Midvalley Coal Co. Mauch Chunk |
| American Hardware Supply – Parkesburg |
Midvalley Coal Co. Mt Carmel |
| American Home Food – Millon |
Midvalley Coal Co. Philadelphia |
| American Industrial Contracting Glenfield |
Midvalley Coal Co. Wilburton |
| American Industrial Contracting Oil City |
Mifflin Jr. High School – Mifflin |
| American Industrial Contracting Sewickley |
Mifflin Schools – Mifflin |
| American Industrial Contractor – Allison Park |
Mifflin Township |
| American Insulated Wire Corp. – New Freedom |
Miklo Construction – Plum |
| American Iron & Steel Co. – Lebanon |
Milbon Manufacturing Co. – Milbon |
| American Iron Steel Manufacturing Co. Lebanon |
Milco Undergarment Co. – Bloomsburg |
| American Lace Manufacturing Co. – Germantown |
Milesburg Power Plant – Milesburgh |
| American Legion Post 75 – Clairton |
Mill #4 Martins Creek |
| American Locomotive Co. Allegheny |
Mill Creek Coal Co. Boston |
| American Locomotive Co. Chester |
Mill Creek Coal Co. Delano |
| American Locomotive Co. Latrobe |
Mill Creek Coal Co. Vulcan |
| American Locomotive Railway Steel Latrobe |
Mill Creek Powerhouse – Johnstown |
| American Machine & Foundry Co. York |
Mill Creek School – Erie |
| American Machine Foundry York |
Mill Machinery & Equipment – Lawrenceville |
| American Magnesia & Covering Co. – Plymouth Meeting |
Mill Strip Division New Castle |
| American Magnesia & Covering Co. White Marsh Junction |
Millard Quarry – Annville |
| American Metallurgical – New Castle |
Millbourne Mills – Philadelphia |
| American Motors – Dubois |
Millcreek Mall – Erie |
| American Oil Co. – York Lyn |
Miller Gas Oil Shamokin |
| American Oil Co. – Yorktown |
Miller Planner Building Boiler Markleysburg |
| American Olean Tile Co. Lansdale |
Miller Printing Machinery Co. Pittsburgh |
| American Olean Tile Co. Quakertown |
Miller Quarries Inc. – Rushland |
| American Paper Products Co. – Lancaster |
Miller Robert L – Mechanicsburg |
| American Pile Fabric Co. – Philadelphia |
Millersburg University – Lenhardt Hall – Millersburg |
| American Pipe Manufacturing Co. – Philadelphia |
Milliam A Colliery Light & Power – Junction |
| American Radiator & Standard Sanitary Corp. – Pittsburgh |
Milliken Hospital Boiler Room – Pottsville |
| American Radiator Standard Sanitary Corp. Pittsburgh |
Milton Manufacturing Co. – Milton |
| American Railway Co. – Philadelphia |
Minard Run Oil Co. – Bradford |
| American Railway Co. Tryone |
Mine – Carmichaels |
| American Road Machine Co. – Kettett Square |
Mine – Jarrets Fort |
| American Rolling Mill Co. – Butler |
Mine – Seward |
| American S. & W. Co. – Pittsburgh |
Mine – Waynesburg |
| American S.& W. Co. Allegheny |
Mine Safety Appliance Co. – Callery |
| American Salvage Co. – Philadelphia |
Mine Safety Appliances – Ridc Industrial Park – Blawnox |
| American Schack Co. Inc. – PA |
Mine Safety Appliances Co. Callery |
| American Sheet & Tin Plate Co, Farreee Works – Farrell |
Mine Safety Appliances Co. Cranberry |
| American Sheet & Tin Plate Co. Demmler |
Mine Safety Appliances Co. Evans City |
| American Sheet & Tin Plate Co. Farreee Works Farreee |
Mine Safety Appliances Co. Monroeville |
| American Sheet & Tin Plate Co. Leechburg |
Mine Safety Appliances Co. Penn Center |
| American Sheet & Tin Plate Co. Monessen |
Mine Safety Appliances Co. Philadelphia |
| American Sheet & Tin Plate Co. New Castle |
Mine Safety Appliances Co. Pittsburgh |
| American Sheet & Tin Plate Co. New Kensington |
Mineral Railroad & Mining Co. – Shamokin |
| American Sheet & Tin Plate Co. Pittsburgh |
Mineral Railroad & Mining Co. Wilkes Barre |
| American Sheet & Tin Plate Co. Scottdale |
Mineral Spring Colliery Wilkes Barre |
| American Sheet & Tin Plate Co. Vandergrift |
Miners Clinic – Carmichael |
| American Sheet Steel Co. Leechburg |
Minersville Housing – Minersville |
| American Sheet Steel Co. McKeesport |
Minneapolis Honeywell Reg. Co. |
| American Sheet Steel Co. Pittsburgh |
Minneapolis Philadelphia |
| American St Gobain Glass Jeanette |
Minnepolis Honeywell Reg. Co. – Philadelphia |
| American St. Gobain – Arnold |
Minnesota Mining & Manufacturing Co. – Bristol |
| American Standard Trenton |
Minnotte Manufacturing Co. Rp Pittsburgh |
| American Steel & Wire Co. – Pittsburgh |
Minotte Brothers Co. – Pittsburgh |
| American Steel & Wire Co. Allentown |
Mira Bell, Inc. – Philadelphia |
| American Steel & Wire Co. Beaver Falls |
Miracle Mile Shopping Center – Monroeville |
| American Steel & Wire Co. Braddock |
Miseracordia- Student Union & Dorms – Kingston |
| American Steel & Wire Co. Donora |
Missile Master Facilities – Oakdale |
| American Steel & Wire Co. New Kensington |
Mitchell Power Station – Courtney |
| American Steel & Wire Co. Pittsburgh |
Mitchell Power Station Monongahela |
| American Steel & Wire Co. Rankin |
Mitchell Power Station Washington County Courtney |
| American Steel Hoop Co. Allegheny |
Mitchell Ps – New Eagle |
| American Steel Hoop Co. Pittsburgh |
Mitchell, Fletcher & Co. – Philadelphia |
| American Steel Wire – Donora |
Mobay Chemical Co. – Pittsburgh |
| American Steel Wire – New Kensington |
Mobil – Philadelphia |
| American Steel Wire – Pittsburgh |
Mobil Chemical Co. Rochester |
| American Stores Co. Inc – Philadelphia |
Mobil Oil Corp. Philadelphia |
| American Sugar Co. – Philadelphia |
Model Coat Apron Co. Pittsburgh |
| American Telephone & Telegraph – PA |
Model Laundry & Dry Cleaning Co. – Jeannette |
| American Tube & Iron Co. – Middletown |
Modern Cooling Philadelphia |
| American Type Founders Co. – Philadelphia |
Moe A & Co. A – Philadelphia |
| American Viscose – Lewistown |
Mohawk Carpet Mills) – Phoenixville |
| American Viscose – Maple Glen |
Mohawk Valley Brewing Co. – Philadelphia |
| American Viscose – Parkersburg, WV |
Molded Materials – Ridgeway |
| American Viscose – Philadelphia |
MolyCorp. – Washington |
| American Viscose Corp. Maple Glen |
Mon Valley Housing Project Monongahela |
| American Viscose Corp. Marcus Hook |
Mon Valley Water Co. – Clairton |
| American Viscose Corp. Meadville |
Mon Valley Water Pump Station – Elizabeth |
| American Viscose Plant – Lewistown |
Monahan Insulation Co. – Pittsburgh |
| American Warming & Ventilating Co. – Altoona |
Monatoe High School – Butler |
| American Warming Ventilating Co. Pittsburgh |
Monessen Steel Co. – Monesson |
| American Water Works & Electric Co. – Pittsburgh |
Monessen Works – Monesson |
| American Water Works & Guarantee Co. – Pittsburgh |
Monesson Elementary School – Monesson |
| American Welding Co. – Carbondale |
Monongahela & Ohio Dredging Co. – Pittsburgh |
| American Window – Arnold |
Monongahela Connecting Railroad Co. – Pittsburgh |
| American Window House – Jeannette |
Monongahela Electric Light & Power Co. – Homer City |
| American Zinc & Chemical Co. – Burgettstown |
Monongahela Electric Light Co. – Monongahela |
| American Zine & Chemical Co. – Langeloth |
Monongahela Elementary School – Monongahela |
| Ames – Parkersburg, WV |
Monongahela Furnaces – McKeesport |
| Ametek Sellersville |
Monongahela Inc. – Line Plane Co. Pittsburgh |
| Amjohn Inc. – Carnegie |
Monongahela Light & Power Co. – Pittsburgh |
| Amoco Pennsylvania Mobile, AL |
Monongahela Light & Power Co. Rankin |
| Amoroso Bakery – Philadelphia |
Monongahela Melting Co. – Altoona |
| Amp, Inc.- Main Office Building – Dauphin County |
Monongahela Natural Gas Co. – Pittsburgh |
| Ampco Metals Inc. – Eddington |
Monongahela Power Co. – Masontown |
| Ampco Metals Inc. Eddington |
Monongahela Power Station – Monongahela |
| Amstar Sugar Delaware Avenue Philadelphia |
Monongahela Railway – Brownsville |
| Amstar Sugar Factory – Philadelphia |
Monongahela River Consolidated Coal & Coke Co. California |
| Amstar Sugar Refinery – Philadelphia |
Monongahela River Consolidated Coal & Coke Co. Pittsburgh |
| Amtrak Shops – PA |
Monongahela Street Railway Co. – Pittsburgh |
| Anchor Brewing Co. – Tarentum |
Monongalia & Ohio Dredging Co. – Pittsburgh |
| Anchor Glass Container Corp. – Connellsville |
Monroe Ship Supply Philadelphia |
| Anchor Hocking Glass Corp. Connellsville |
Monroeville High School – Monroeville |
| Anchor Hocking Glass Corp. Lancaster |
Monroeville Mall – Monroeville |
| Anchor Hocking Glass Corp. Monaca |
Monroeville Townhouses – Monroeville |
| Anchor Hocking Plant, Connellsville |
Monsanto Chemical Co. – Philadelphia |
| Anchor Supply Co. – Carnegie |
Monsey Products – Kimberton |
| Andrew Kaul Memorial Hospital – St. Marys |
Monsey Products Co. – Philadelphia |
| Andy Gard Toy Factory – Leetsdale |
Monsey Products Kimberton |
| Anita Coal Mining Co. – Punxsutawney |
Monsey Products Wissahicken |
| Annex Hotel Co. – Pittsburgh |
Mont Alto Sanitarium Mont Alto |
| Anselm School – Pittsburgh |
Montefoire Hospital – Pittsburgh |
| Anthony Compola Plumbing – Philadelphia |
Montgomery Iron Co. – Port Kennedy |
| Anthracene Pilot Plant Applied Research Lab Clairton |
Montgomery Ward – Monroeville |
| Anthracene Pilot Plant Lab Clairton |
Montour 10 Mine Pilot Plant Storeroom Library |
| Anthracite Briquette Co. – Sunbury |
Montour Cty Danville |
| Anthracite Museum – Ashland |
Montour High School – Robinson Twp |
| Antioch Building – Pittsburgh |
Montour No 1 Power Plant Strawberry Ridge |
| Anvil International Columbia |
Montour No 1 Power Plant Washingtonville |
| Ap Green Refractories Division Tarentum |
Montour Power Plant |
| Ap Green Refractories Remmey Division – Philadelphia |
Montour Power Plant Washingtonville |
| Apollo Gas Co. – Templeton |
Montour Power Station – Montour |
| Apollo Iron & Steel Co – Pittsburgh |
Montour Station Unit #1 & #2 Washingtonville |
| Apollo Iron & Steel Co. – Apollo |
Montour Steam Elec Station Unit 1, 2 Strawberry Ridge |
| Apollo Iron & Steel Co. Templeton |
Montour Steam Station Pa Power & Light Washingtonville |
| Apollo Iron & Steel Co. Vandergrift |
Montour Steel & Iron Co. – Danville |
| Apollo Plant Apollo |
Moore College Of Art – Philadelphia |
| Apparatus Pittsburgh Service Center Mifflin |
Moore Pool – Brookline |
| Appleby Brothers Whittaker Harrisburg |
Moore Street Elementary School – Millersburg |
| Appleton Paper Mill – Roaring Springs |
Moorehead Brothers & Co. – Pittsburgh |
| Appleton Paper Mill – Tyrone |
Moorhead Brothers & Co. Sharpsburg |
| Appleton Papers, Inc. – Roaring Springs |
Morado Beaver County |
| Applied Energy Services Corp. – Monaca |
Moravian College – Bethlehem |
| Applied Research Center – PA |
Morco- Cochranton |
| Applied Research Lab Monroeville |
Morgan Paper Co. – Lititz |
| Aquitaine Chemical Co. – Birdsboro |
Morganstern Electric – Mifflin |
| Aranderson – Painted Post |
Morganthaler Brothers – Philadelphia |
| Arbogast & Bastlan Co. – Allentown |
Morganza Youth Development Center – Washington |
| Arbuckle & Co. – Pittsburgh |
Morgenthaler Brothers – Philadelphia |
| Arbuckle, Ryan & Co. Inc. – Pittsburgh |
Morgenthaler Ice Manufacturing Co. – Philadelphia |
| Arbutus Village – Johnstown |
Mormac Co. Lake Chester |
| Arbys Restaurant – Mt. Lebanon |
Mormac Trade Chester |
| Arc Master Enterprise – Latrobe |
Mormacbay Co. Chester |
| Arcade Building – Philadelphia |
Mormacpride Co. Chester |
| Arcade Real Estate Co. – Philadelphia |
Mormacscan Co. Chester |
| Archbishop Carroll High School – Quarryville |
Moro Phillips – Philadelphia |
| Archibald Colly Archibald |
Morrell Felin Meat Packers – Philadelphia |
| Architectural Steel – Philadelphia |
Morrellsville Colliery Nantyglo |
| ARCO Atlantic Refinery Philadelphia |
Morris School – Philadelphia |
| ARCO Chemical – Newtown |
Morris School 26Th Thompson Philadelphia |
| ARCO Chemical Koppers – Monaca |
Morristown Railway Co. Philadelphia |
| ARCO Chemical Newtown |
Moss Rehabilitation Hospital – Philadelphia |
| ARCO Chemical Plant – Beaver |
Mother Of Divine Grace – Philadelphia |
| ARCO Chemical Plant – Kobuta |
Motion Control – Ridgway |
| ARCO Oil Refinery – Philadelphia |
Motion Control Molded Materials Ridgeway |
| ARCO Polymers – Kubota |
Motor Coil Manufacturing – Braddock |
| ARCO Polymers – Monaca |
Motor Coils Manufacturing Co. Emporium |
| ARCO ssyunk Avenue & Schulykill River Philadelphia |
Motor Coils Manufacturing Co. Evans City |
| Arco-Polymers, Inc. – Kabuta |
Motorola Co. Carlisle |
| Arcos Corp. Philadelphia |
Mount Alto Sanitarium – Mont Alto Park |
| Arcwire Corp. – Mt. Carmel |
Mount Holly Springs – Crumberland County |
| Arden Verner Painting – Springdale |
Mount Jesseys Coal Co. – Peckville |
| Argo Mills – Philadelphia |
Mount Joy Vo- Tech Building 432 Old Market Street Mount Joy |
| Argonne – Hog Island |
Mount Lebanous Ice Co. – Mt. Lebanon |
| Argyl Manufacturing Co. – Pen Argyl |
Mount Lookout Coal Co. – Wyoming |
| Aristech Chemical – Neville Island |
Mount Morich – Philadelphia |
| Armco – Middletown |
Mount Pleasant Electric Light & Power Co. – Mt. Pleasant |
| Armco Advanced Materials Corp. Butler |
Mount Sinai Hospital – Philadelphia |
| Armco Ak Steel – Sharon |
Mount St. Joseph Academy – Philadelphia |
| Armco Ambridge |
Mountain Top Industrial Park – Mountain Top |
| Armco Specialty Steel Division Butler |
Mountain View Center, Inc. – Kylertown |
| Armco Steel Co. Ambridge |
Mrs Paul’s Frozen Foods – Philadelphia |
| Armco Steel Co. Butler |
Msa – Evans City |
| Armco Steel Co. Middletown |
Mt. Hope Church – Mt. Hope |
| Armco Steel Co. Pittsburgh |
MT. Lebanon High School – MT. Lebanon |
| Armco Steel Co. Sharon |
Mt. Lebanon Methodist Church – Mt. Lebanon |
| Armco Steel Co. Wheatland |
MT. Pleasant High School – MT. Pleasant |
| Armco Steel Mill – Butler |
Muhlenberg High School Philadelphia |
| Armco Steel Saw Hill Tube Division – Wheatland |
Mulligan Harold B – Philadelphia |
| Armco Steel-Ambridge Works Plant – Ambridge |
Mullins Manufacturing Co. – Hays |
| Armec – Butler |
Munhall High School – Munhall |
| Armory – Washington |
Municipal – Ross Township |
| Armour & Co. – Philadelphia |
Municipal Authority of Westmoreland City – Greensburg |
| Armour & Co. Crafton |
Municipal Electric Department, Elwood City |
| Armour & Co. Philadelphia |
Municipal Electric Dept. Ellwood City Borough – Ellwood City |
| Armour Leather Co. – Kaulmont |
Municipal Hospital – Philadelphia |
| Armour Slaughterhouse Herrs Island |
Municipal Service Building City Hall Philadelphia |
| Armstrong Brothers Tool Co. Pittsburgh |
Municipality of Ellwood City – Ellwood City |
| Armstrong Cement Penn- Dixie Cement Cabot |
Munition Plant – Tacony |
| Armstrong Container Supply Lancaster |
Murphy Mart – Bethel Park |
| Armstrong Container Supply Washington |
Murphy Mart – Springdale |
| Armstrong Contracting Supply Corp. Harrisburg |
Murray Body Co. – Scranton |
| Armstrong Contracting Supply Corp. Lancaster |
Murray Corp. – Scranton |
| Armstrong Contracting Supply Corp. Philadelphia |
Muskin Coal Mining Co. – Cairnbrook |
| Armstrong Contracting Supply Corp. Pittsburgh |
Muskin Manufacturing Co. – Wilkes Barre |
| Armstrong Cork & Insulation Co. – Oakdale |
Mutual Chemical Division of Allied Chemical & Dye – Philadelphia |
| Armstrong Cork Armstrong World Industries Lancaster |
Mutual Rendering Co. – Philadelphia |
| Armstrong Cork Co. – Beaver Falls |
Mutual Shoemaker Co. Philadelphia |
| Armstrong Cork Co. Beaver Falls |
Myers Furniture – New Kensington |
| Armstrong Cork Co. Building 34- E Lancaster |
N & G Taylor Co. – Philadelphia |
| Armstrong Cork Co. Buildings 403- 408 Lancaster |
N H Robertson Co. – Ambridge |
| Armstrong Cork Co. Digester Liquor Tank Lancaster |
N R S Yewdall – Philadelphia |
| Armstrong Cork Co. Diller Plank, Inc. Lancaster |
N. & G. Taylor Co. – Philadelphia |
| Armstrong Cork Co. Linoleum Division Lancaster |
N. J. & Penna Traction Co. |
| Armstrong Cork Co. Pitt Plant 24Th Street Pittsburgh |
N. R. G. Barriers Can Do Industries Park – Hazleton |
| Armstrong Cork Co. Storage Blending Tank Lancaster |
N. R. S. Yewdall – Philadelphia |
| Armstrong Cork Co. Tanks Hood Pittsburgh |
N. S. – Pittsburgh |
| Armstrong Cork Plant – Lancaster |
N. Snellenburg & Co. – Philadelphia |
| Armstrong County Jail – Armstrong |
Nabisco – Philadelphia |
| Armstrong County Memorial Hospital – Armstrong |
Nabisco Plant Penn Ave. – Pittsburgh |
| Armstrong Flooring Plant – Lancaster |
Nancy Corp. – Summerville |
| Armstrong Inc. W. W. Pittsburgh |
Nanticoke |
| Armstrong Lab Columbia Pike – Lancaster |
Nanty Glo Housing Project – Nanty Glo |
| Armstrong Power Station – Kittanning |
NARCO Curwensville |
| Armstrong Power Station Reesedale |
NARCO Plant – Womelsdorf Plant – Womelsdorf |
| Armstrong Sanitary Wipers – Pittsburgh |
Nathan R. Yewdall – Philadelphia |
| Armstrong World Industries – Lancaster |
National Airoil Burner Co. – Philadelphia |
| Armstrong World Industries New Brighton |
National Alloy Steel Co. – Blawnox |
| Armstrong World, Ltd. – Lancaster |
National Aniline & Chemical Co. – Maple Glen |
| Army Aviation Fac, Hanger & Shops – New Cumberland |
National Aniline Division- USS Chemicals – McKees Rocks |
| Army Reserve Center – Clearfield |
National Biscuit Co. Cracker Bakery Pittsburgh |
| Arnold Township – Arnold |
National Biscuit Co. Liberty |
| Arnomink Steam Heat Co. – Drexal Hill |
National Biscuit Cracker Bakery Pittsburgh |
| Art Loom Corp – Philadelphia |
National Biscuit Plant – Pittsburgh |
| Art Loom Corp. – Philadelphia |
National Bond Insulators, Inc. – Allentown |
| Arthur C. Mangels Industries Phoenixville |
National Borax Co. – Lancaster |
| Arthur G. McKee Co. Fairless Works Fairless |
National Can – Fairless Hills |
| Asbestos & Magnesia Manufacturing Co. – Port Kennedy |
National Can Corp. Bristol |
| Asbestos Insulation Co. Norristown |
National Can Fairless Hills |
| Asbestos, Shingle, Slate & Sheathing Co. Ambler |
National Car Alamo Car Rental – Pittsburgh |
| Asg Industries American Window House – Jeannette |
National Casket Co. Inc – Pittsburgh |
| Ash Hospital – Allentown |
National Casting – Sharon |
| Ashland Chemical Co. – Pittsburgh |
National Castings Foundry – Sharon |
| Ashland Emery & Corundum Co. – Easton |
National Container Co. – Bristol |
| Ashland Oil – Beaver |
National Crucible Co. – Philadelphia |
| Ashland Oil – Elizabeth |
National Distillers Products Corp. – Broad Ford |
| Ashland Oil – Vanport |
National Drug Co. Center Valley |
| Ashland Oil & Refinery Co. – Freedom |
National Drug Co. Manufacturing Plant Swiftwater |
| Ashland Oil & Refining Co. – Floreffe |
National Drug Co. Research & Development Building – Swiftwater |
| Ashland State Hospital – Ashland |
National Drug Co. Research Building Swiftwater |
| Ashland State Hospital – Ashland |
National Electric – Ambridge |
| Ashley & Bailey Silk Mill – Columbia |
National Electric Products Co. Manufacturing Facility Ambridge |
| Ashley Bailey Silk Mill – Columbia |
National Foam Co. – Chester |
| Asphalt Paving & Supply – Norristown |
National Food Products – Beach Glen |
| Asphalt Paving Co. Norristown |
National Forge & Ordnance Co. – Irwin |
| Asphalt Paving Supply Norristown |
National Forge Co. Erie |
| Asphalt Plant – Pittsburgh |
National Forge Co. Irvine |
| Asphalt Plant – Springdale |
National Forge Co. Irvine |
| Asphalt Products – Pittsburgh |
National Forge Ordnance Irvine |
| Aspinwall Water Plant – Aspinwall |
National Galvanizing Co. – Pittsburgh |
| Asten Hill Manufacturing – Philadelphia |
National Galvanizing Works – McKeesport |
| Asten-Hill – Philadelphia |
National Gypsum Co. – Bellefonte |
| AT & T Co. Allentown |
National Gypsum Co. – Boiler House – New Columbia |
| AT & T Co. Pottstown |
National Gypsum Co. – Milton |
| AT & T Co. Reading |
National Heat & Power – Philadelphia |
| At & T Co. Springfield |
National Lead & Oil Co. Allegheny |
| At&T Technologies – Allentown |
National Lead Co. Philadelphia Building #9 #30 |
| AT. & T. Solid State Technology Center – Lehigh County |
National Lead Co. Pittsburgh |
| Atec Building – Pittsburgh |
National Lead Doehler Jarvis Civ Pottstown |
| Athletic Club Of The Schuylkill Navy – Philadelphia |
National Lead Dust Arrester Conical Hopper Philadelphia |
| Athos Steel Mill – Philadelphia |
National Lead Industries, Inc. Pottstown |
| Atlanta Boiling Setting Powder Springs |
National Malleable – Sharon |
| Atlantic & Gulf Co. – Philadelphia |
National Material – Arnold |
| Atlantic Baking Group, Inc – Pittsburgh |
National Mining Co. – Pittsburgh |
| Atlantic City Electric – Philadelphia |
National Mining Co. Sugar Station |
| Atlantic City Power Station – Philadelphia |
National Mining Co. Sygam |
| Atlantic City Railroad – Philadelphia |
National Mining Co. Traveskyn |
| Atlantic Crushed Coke Co. – Greensburg |
National Molasses – Philadelphia |
| Atlantic Electric Motor – Philadelphia |
National Paper Co. – Ransom |
| Atlantic Flour Mills – Philadelphia |
National Plastics Co. Jeannette |
| Atlantic Gulf Co. Philadelphia |
National Plumbing – Ellwood City |
| Atlantic Metals Corp. – Philadelphia |
National Portland Cement Co. – Bethlehem |
| Atlantic Oil Heat White Hall |
National Portland Cement Co. Brodhead |
| Atlantic Oil Refinery – Philadelphia |
National Portland Cement Co. Hecktown |
| Atlantic Pipeline Co. – Philadelphia |
National Radiator – Duncansville |
| Atlantic Port Contractors, Inc. – Philadelphia |
National Radiator Co. – Johnstown |
| Atlantic Refinery Bulk Plant – Harrisburg |
National Roll Division – Avonmore |
| Atlantic Refinery Co. Philadelphia |
National Rolling Mill – McKeesport |
| Atlantic Refining Co. Central Warehouse 1 Headquarters Philadelphia |
National Standard Wire of Mount Joy – Mt. Joy |
| Atlantic Refining Co. Central Warehouse Delivery Track 85 Philadelphia |
National Steel CO. McKeesport |
| Atlantic Refining Co. Chester |
National Steel Co. New Castle |
| Atlantic Refining Co. Fourth Floor Rear Philadelphia |
National Steel Co. Pittsburgh |
| Atlantic Refining Co. Location 1 Philadelphia |
National Steel Co. Sharon |
| Atlantic Refining Co. North Gate Harry Yust – Philadelphia |
National Steel Service Center, Inc. New Castle |
| Atlantic Refining Co. North Yard Asphalt Plant – Philadelphia |
National Sugar Co. Philadelphia |
| Atlantic Refining Co. North Yard Asphalt Plant Philadelphia |
National Sugar Philadelphia |
| Atlantic Refining Co. North Yard Philadelphia |
National Sugar Refinery |
| Atlantic Refining Co. Philadelphia Refinery – Philadelphia |
National Sugar Refinery Co. – Philadelphia |
| Atlantic Refining Co. Pittsburgh |
National Supply Co. Ambridge |
| Atlantic Refining Co. Point Breeze Heavy Fuel Addition – Philadelphia |
National Supply Co. Etna |
| Atlantic Refining Co. Point Breeze Refinery – Philadelphia |
National Supply Co. Pittsburgh |
| Atlantic Refining Co. Point Breeze Wax Plant – Philadelphia |
National Tire & Battery – North Hills |
| Atlantic Refining Co. Refinery North Yard Gate Tank Philadelphia |
National Torch Tip – Aspinwall |
| Atlantic Refining Co. Research Development Center – Philadelphia |
National Tube Co. Chester |
| Atlantic Refining Co. Schuylkill & Lanier – Philadelphia |
National Tube Co. Division National Works McKeesport |
| Atlantic Refining Co. Schuylkill & Lanier Philadelphia |
National Tube Co. Ellwood City |
| Atlantic Refining Co. Tanks # 1264 1265 Philadelphia |
National Tube Co. Monongahela Furnaces McKeesport |
| Atlantic Refining Co. Tanks # 1264, 1265 – Philadelphia |
National Tube Co. Pennsylvania Department Pittsburgh |
| Atlantic Refining Co. Warehouse Loc Nbr 1 – Philadelphia |
National Tube Co. Philadelphia |
| Atlantic Refining Co. Wolstons Woods Yard – Philadelphia |
National Tube Co. Pittsburgh |
| Atlantic Richfield Barge Loading Facilities Philadelphia |
National Tube Division National Works McKeesport |
| Atlantic Richfield Central Warehouse Location 1 Philadelphia |
National Tube Works Co. – McKeesport |
| Atlantic Richfield Co. – Point Breeze |
National Tube Works Co. McKeesport |
| Atlantic Union Resources, Inc. Philadelphia |
National Tube Works Co. Versailles |
| Atlas Cement Co. – North Hampton |
National Tube Works McKeesport |
| Atlas Chemicals Inc. Mertztown |
National Valve – Johnstown |
| Atlas Mineral Products Inc. – Mertztown |
National Valve & Manufacturing Pittsburgh |
| Atlas Portland Cement Co. – North Hampton |
National Valve Co. – Etna |
| Atlas Powder Co. – Reynolds |
National Valve Co. Johnstown |
| Atochem North America Philadelphia |
National Valve Co. Lawrenceville |
| Atomic Apparatus Subdivision Office Large |
National Valve Manufact Pittsburgh |
| Atomic Energy Plant Shippingport |
National Vulcanized Fiber – Kettett Square |
| Atomic Power Div. – Forrest Hills |
National Vulcanized Fiber Co. – York Lyn |
| Atomic Power Plant Beaver |
National Vulcanized Fiber Kennett Square |
| Atomic Power Station – Pittsburgh |
Natrona Heights Power Plant, Natrona Heights |
| Auburn Brick Co. Auburn |
Natural Gas Pipeline – Nazareth |
| Auburn Engineering – Pittsburgh |
Navaco. – Lawrenceville |
| Audenried #4 Coll – Aurenreid |
Naval Air & Research Center |
| Auditorium, Danville State Hospital Danville |
Naval Air Station – Philadelphia |
| August Wagner Breweries, Inc. – Pittsburgh |
Naval Aviation Supply Depot – Philadelphia |
| Aurora Furnace Co. Wrightsville |
Naval Boiler & Turbine Laboratory School – Philadelphia |
| Ausco St Joseph |
Naval Dry Dock – Philadelphia |
| Austin Construction – Duryea |
Naval Ordnance Works – Midland |
| Auto Car Co. – Ardmore |
Naval Ship Engineering Center – Philadelphia |
| Auto Steam Equipment Co. – Philadelphia |
Naval Supply Depot – Mechanicsburg |
| Autocar Trucks Exton |
Navasota Co. Chester |
| Automotive & Railcar Assembly Plant – Philadelphia |
Navy Propulsion Plant – Greensburg |
| AVCO. Spencer Div. Williamsport |
Navy Yard – Philadelphia |
| Ave Apartments – Huntingdon Valley |
Navy Yard Dry Dock – Philadelphia |
| Avella Water Treatment Plant – Avella |
Nazareth Cement Co. – Nazareth |
| Avtex Fibers Inc. – Maple Glen |
Nazareth Cement Plant – Nazareth |
| Aylwin – Philadelphia |
Nazareth Hospital – Philadelphia |
| A-Z Paper Co. Philadelphia |
Nazareth Portland Cement Co. – Nazareth |
| B & O Railroad – Fitz Henry To Layton |
Nazareth Steel Fabricators – Nazareth |
| B & O Railroad – Glenwood |
NCC Pet Food Corp. Laddie Philadelphia |
| B & O Railroad – New Castle |
NCO – Robinson Township |
| B & O Railroad – Sharon |
Neals Welding & Fabricating Steelton |
| B & W Main Tube Plant – Beaver Falls |
Neatsfoot Oil Refineries – Philadelphia |
| B F Goodrich Tire Co. – Oaks |
Neatsfoot Oil Refineries Philadelphia |
| B Knox Coraopolis |
Nelson Valve Co. – Chestnut Hill |
| B N Saul Hardware Builders Supply – Apollo |
Nelson Valve Co. – Philadelphia |
| B. & W. Main Tube Plant – Pittsburgh |
Nemaugh Station- Indiana Co Unit #2 – Huff |
| B. F. Goodrich Tire & Rubber Plant – Oaks |
Nesbitt Manufacturing Co. – Philadelphia |
| B. F. Refinery – Maple Glen |
Neshaminy High School – Langehorne |
| B. F. Refinery Marcus Hook |
Neshaminy Nursing – Doylestown |
| B. Levy Estate – Titusville |
Nesque – Hominy |
| B. P. Oil Co. Chester |
Neville Chemical Co. Nequehoning |
| B. P. Oil Co. Philadelphia |
Neville Chemical Co. Neville Island Store Room Pittsburgh |
| B. P. Oil Corp. Hook Refinery Marcus Hook |
Neville Chemical Co. Pittsburgh |
| B. R. P. Roundhouse Puxsatawney |
Neville Co. Neville Island |
| B. V. H. Hotel Associates Philadelphia |
Neville Island – Morton |
| B. W. Main Tube Plant Pittsburg |
Neville Island Coke & Chemical – Nequehoning |
| Babcock & Wilcox Co. Ambridge |
Neville Island Pittsburgh |
| Babcock & Wilcox Co. Beaver |
Neville Island Shipyards – Neville Island |
| Babcock & Wilcox Co. Coppel |
Neville St. Apartments – Pittsburgh |
| Babcock & Wilcox Co. Ellwood City |
New A & B Foundry Inc. Connellsville |
| Babcock & Wilcox Co. Homer City |
New Air Cond System Closure Plant – Lancaster |
| Babcock & Wilcox Co. Koppel Plant Koppel |
New Brighton High School – New Brighton |
| Babcock & Wilcox Co. Koppel Works – Beaver Falls |
New Castle & Lowell Railway Co. – Edinburg |
| Babcock & Wilcox Co. Koppel Works Beaver Falls |
New Castle Electric Co. – New Castle |
| Babcock & Wilcox Co. Laurence County |
New Castle Junior High School – New Castle |
| Babcock & Wilcox Co. Main Plant – Beaver Falls |
New Castle Light, Heat & Power Co. – New Castle |
| Babcock & Wilcox Co. Main Tube Plant Mayfield |
New Castle Meat Packing Co. – New Castle |
| Babcock & Wilcox Co. Masontown |
New Castle Plant – New Castle |
| Babcock & Wilcox Co. Middletown |
New Castle Portland Cement Co. New Castle |
| Babcock & Wilcox Co. Monessen |
New Castle Power Generating Station – New Castle |
| Babcock & Wilcox Co. Philadelphia |
New Castle Railway Co. |
| Babcock & Wilcox Co. Pittsburgh |
New Castle Railway Co. Evans City |
| Babcock & Wilcox Co. Seamless Tube Plant – Beaver Falls |
New Castle Shovel Co. – New Castle |
| Babcock & Wilcox Co. Steel Mills Beaver Falls |
New Castle Stamping Co. – New Castle |
| Babcock & Wilcox Co. Tube Co. Beaver Falls |
New Castle Station – Pittsburgh |
| Babcock & Wilcox Co. Tubular Products Division Ambridge |
New Castle Vo- Tech School – New Castle |
| Babcock & Wilcox Co. Tubular Products Division Beaver Falls |
New Castle Water Co. – New Castle |
| Babcock & Wilcox Co. Tubular Products Division Koppel |
New Cumberland Army Depot – New Cumberland |
| Babcock & Wilcox Co. Wallace Run Plant – Wallace Run |
New Cumberland General Depot – New Cumberland |
| Babcock & Wilcox Co. Works – Beaver Falls |
New Duquesne Science Hall – Pittsburgh |
| Backos & Johns Lumberyard – Pitcairn |
New Eagle Power Station – New Eagle |
| Badeer Adamson & Co. – Philadelphia |
New Federal Building – Pittsburgh |
| Badenhauser – Cornwell Heights |
New Federal Office Building – Philadelphia |
| Badger Corp Benzoil Plant 8 – Clairton |
New Florence High School – New Florence |
| Badger Us Steel Chem Plant – Nequehoning |
New Jersey & Pennsylvania Traction Co. Yardley |
| Badwell Co. – Harrisburg |
New Jersey Mills – Philadelphia |
| Baeder Adamson & Co. – Philadelphia |
New Jersey Zinc Co. Bethlehem |
| Bagdad Plant – Leechburg |
New Jersey Zinc Co. Center Valley |
| Bailey Banks & Biddle Building – Philadelphia |
New Jersey Zinc Co. Freemansburg |
| Bailey High School – Pittsburgh |
New Jersey Zinc Co. Friedensville |
| Baird Insulation Co. – Chambersburg |
New Jersey Zinc Co. Hazard |
| Bairel Chevrolet – Wexford |
New Jersey Zinc Co. of Pennsylvania Plant, Plamerton |
| Baker Adamson Plant Marcus Hook |
New Jersey Zinc Co. Plant Z Palmerton |
| Baker Carver & Morrel – Philadelphia |
New Jersey Zinc Refinery Smelter – Palmerton |
| Baker Chain & Wagon Iron Manufacturing Co. Allegheny |
New Jr High School – Troy |
| Baker Co. J. E. – York |
New Kensington Auto Parts – New Kensington |
| Baker Elementary School – Altoona |
New Kensington High School – New Kensington |
| Baker, Smith & Co. – Pittsburgh |
New Kensington Hospital – New Kensington |
| Bala Cynwyd Junior High School – Bala Cynwyd |
New Kensington Housing Project – New Kensington |
| Balch Flavor Co. Inc. Pittsburgh |
New Kensington Water Authority Pump Station – New Kensington |
| Bald Eagle Chemical – Mill Hall |
New Office Building – Lancaster |
| Baldt Anchor Forge Co. Chester |
New Oxford Junior High School – New Oxford |
| Baldt Anchor, Chain Forge Co. Chester |
New Pellet Plant – Cornwall |
| Baldwin Automotive – Essington |
New Process – Warren |
| Baldwin Court Apartments – Baldwin |
New Recreation Selinsgrove Center – Selinsgrove |
| Baldwin Fire Hall No. 1 – Baldwin |
New River & Pocahontas Consolidated Coal Co. – Philadelphia |
| Baldwin Lima Hamilton – Chester |
New River Rocahontas Consolidated Coal Co. – Philadelphia |
| Baldwin Lima Hamilton Corp. Burnham |
New Secondary School – Wyalusing |
| Baldwin- Lima- Hamilton Corp. Eddystone |
New Senior High School – Lancaster |
| Baldwin Locomotive Philadelphia |
New Sr. High School – Lancaster |
| Baldwin Locomotive Works – Burnham |
New Steel Buidlings, Spang Steel Co. – Butler |
| Baldwin Locomotive Works Eddystone |
New Steel Building – Butler |
| Baldwin Locomotive Works Philadelphia |
New Williamsport High School – Wiliamsport |
| Baldwin-Ehert- Hill Inc. -Valley Forge |
New Wilmington City Hall & Courthouse – New Wilmington |
| Baldwin-Ehert-Hill Inc. – Port Kennedy |
New York & Penn Co, Inc. – Johnsonburg |
| Baldwin-Lima-Hamilton Corp. Burnham |
New York & Pennsylvania Co, Inc. – Lock Haven |
| Baldwin-Lima-Hamilton Corp. Eddystone |
New York & Pennsylvania Co. – Johnsonburg |
| Ball Engine Co. – Erie |
New York & Pennsylvania Paper Co – Boiler Room – Haven |
| Ballied Chemical & Dye Corp. Philadelphia |
New York Central & Hudson River RR, Penn Central, Harmon Yard |
| Baltimore & Ohio Railroad Co. Connellsville |
New York Gas Compressor Station – Delmont |
| Baltimore & Ohio Railroad Co. Dubois |
New York Natural Gas Corp. Sabinsville |
| Baltimore & Ohio Railroad Co. Glenwood |
New York Penn Co. Inc. Johnsonburg |
| Baltimore & Ohio Railroad Co. New Castle Junction |
New York Penna Co. Lock Haven |
| Baltimore & Ohio Railroad Co. Philadelphia |
New York Pennsylvania Co. Inc. Johnsonburg |
| Baltimore & Ohio Railroad Co. Pittsburgh |
New York Pennsylvania Co. Inc. Lock Haven |
| Baltimore Electrical Power Plant – Parsons |
New York Pennsylvania Paper Co. Boiler Room Lock Haven |
| Baltimore Ohio Railroad Co. Division Sk Section a New Castle |
New York Philadelphia & Norfolk Railway Co. – Philadelphia |
| Baltimore Ohio Railroad Co. Division Sk Section C, Loco. Shops Dubois |
New York Shipbuilding Co. – Philadelphia |
| Baltimore- Ohio RR – Evans City |
New York Shipping – Philadelphia |
| Bangor Electric Light, Heat & Power Co. – Bangor |
New York State Electric & Gas Co. Homer City |
| Bank Of North America – Philadelphia |
New York State Electric & Gas Corp. – Lawrenceville |
| Banks Morton Pittsburgh |
New York State Natural Gas – Sabinsville Compressor Station – Sabinsville |
| Banning RD. – Lower Tyrone Township |
New York State Natural Gas Co. – Delmont |
| Bantam Car Works – Evans City |
New York State Natural Gas Co. 86 Pump Station Lane Lawrenceville |
| Barbados Island Power Plant – Norristown |
New York State Natural Gas Co. Leidy Station Renovo |
| Barbados Island Power Plant Barbados Island |
New York State Natural Gas Co. Oakford Compressor Station Delmont |
| Barber Asphalt Paving Co. Philadelphia |
New York State Natural Gas Co. Sabinsville Compressor Station Sabinsville |
| Bard Insulation Co. Chambersburg |
New York State Natural Gas Co. Tonkin Station Murraysville |
| Bargain City – Philadelphia |
New York Wilkins Co. Engineers – Pittsburgh |
| Barkley Apartments – Philadelphia |
New York Wire Cloth Co. – York |
| Barkley Lumber Supply – Listonburg |
Newark Processing Co. – Chester |
| Barnes Construction Co. – New Castle |
Newburn Glass Co. – Royersford |
| Barnes Tucker Coal Carrolltown |
Newcor – Mueller |
| Barney Co- Philadelphia |
Newell Chemical – Newell |
| Barnum Breaker – Pittston |
Newman & Co. Inc – Philadelphia |
| Barnum Colliery – Pittston |
Newton Coal Mining Co. – Pittston |
| Barone Launch Service – Philadelphia |
Newton Paper Co. Newton |
| Barret Div Allied Chemical & Dye Corp. – Philadelphia |
Nice Ball Bearing – Kulpsville |
| Barrett Chemical Co. Philadelphia |
Nice Ball Bearing Co. – Philadelphia |
| Barrett Co. – Bethlehem |
Nice Ball Bearing Kulpaville |
| Barrett Co. Frankford |
Nicetown Plate Washer Co. – Nicetown |
| Barrett Div Allied Chemical & Dye Corp – Philadelphia |
Nicetown Station – Philadelphia |
| Barrett Manufacturing Co. – Frankford |
Nicholson File Co. – Philadelphia |
| Barretts Roofing – Philadelphia |
Nicholson File Co. Red Lion Philadelphia |
| Barron College – Erie |
Nick Istock Inc. – Aliquippa |
| Barrones Launch Serv Inc – Philadelphia |
Nickel Plumbing & Heating – Pittsburgh |
| Barry’s Home Improvements – Cherry Tree |
Nicolet Industries – Ambler |
| Bart Colerain Elementary School – Bartville |
Nicolet Industries Lansdale |
| Bartels Brewing Co. – Kingston |
Nicolet Industries Norristown |
| Bartels Brewing Co. – Pennsylvania |
Nicolette Industries Ambler |
| Bartoletta Packard – Braddock |
Niles Bement Pond Co. – Philadelphia |
| Bartolotto Supermarket – Monongahela |
Niles Building – Philadelphia |
| BASF Corp. Butler |
Niles-Bement Pond Co. Philadelphia |
| Bashland Chemical Co. – Pittsburgh |
Niles-Bement-Pond Co. – Nicetown |
| Basic Construction Co. – Philadelphia |
Ninos Auto Body – Braddock |
| Bath Portland Cement Co. – Bath |
Nixon Theatre – Pittsburgh |
| Bath Portland Cement Co. Sands Eddy |
Nm. Penn Colliery – Shaft |
| Baugh Chemical – Philadelphia |
No 2 Shaft – Williamstown |
| Baum Boulevard Volvo Pittsburgh |
No Am Refr Curwensville |
| Bayamon Chester |
Noah Barlow – Philadelphia |
| Bayless Pulp & Paper Co. – Austin |
Noble Drilling – Paul Romano, Inc. |
| Beach Bottom Nuclear Power Station – Delta |
Noble J. Dick Office Building Large |
| Beacon Light Co. – Chester |
Nordberg – Pastorel, Minneapolis Power Plant |
| Beam Yard Powerhouse – Johnstown |
Norfolk & Western Railroad – Erie |
| Bear Gap Water Co. – Shamokin |
Norfolk Southern Corp. – Hollidaysburg |
| Bear Valley #1 Boiler House – Williamstown |
Norfolk Western Railroad Erie |
| Bear Valley Shaft – Williamstown |
Norfolk Western Shops |
| Beaumont Birch Co. – Philadelphia |
Norland Shipping & Trading Co. – Morrisville |
| Beaver Coal & Coke Co. – Wampum |
Norris Smelting & Refining – Swedeland |
| Beaver College – Glenside |
Norristown Hospital – Norristown |
| Beaver County Geriatric Center – Beaver |
Norristown Magnesia & Asbestos Co. – Norristown |
| Beaver County Home & Hospital – Beaver |
Norristown Municipal Sanitation Department – Norristown |
| Beaver County Jail – Beaver |
Norristown Municipal Sanitation Dept. – Norristown |
| Beaver County Light Co. – Fallston |
Norristown Post Office – Norristown |
| Beaver Falls Medical Center – Beaver Falls |
Norristown State Hospital – Norristown |
| Beaver Falls Plaza – Beaver Falls |
Norristown U. S Post Office Norristown |
| Beaver Falls Sewage Treatment – Beaver Falls |
North Allegheny High School – Wexford |
| Beaver Hill Apartments – Jenkinstown |
North American Coal Co. Conemaugh |
| Beaver Hospital – Beaver |
North American Construction Co. – Pittsburgh |
| Beaver Meadow Collierty – Drifton |
North American Lace Co. – Philadelphia |
| Beaver Meadow Colliery – Beaver Meadow |
North American Refractories Co. Pittsburgh |
| Beaver Meadow Colliery Drifton |
North American Refractories Co. Womelsdorf |
| Beaver Run Coal Co. Philadelphia |
North American Refractory Curwensville |
| Beaver Stadium – Beaver |
North American Rockwell New Castle |
| Beaver Valley Atomic Power Plant – Beaver Valley |
North American Rockwell Pittsburgh |
| Beaver Valley General Hospital – New Brighton |
North American Rockwell Reading |
| Beaver Valley Heat Treating – Beaver Valley |
North American Smelting Co. Philadelphia |
| Beaver Valley Mall – Monaca |
North Belle Vernon Elementary School – Belle Vernon |
| Beaver Valley Medical Center – Beaver |
North Branch Steel Co. – Danville |
| Beaver Valley Nuclear Power Plant – Sharon |
North Brothers Co. – Coatesville |
| Beaver Valley Nuclear Power Plant Shippingport |
North Brothers Manufacturing Co. – Philadelphia |
| Beaver Valley Power Station Unit Shippingport |
North Cambia St. Railway Co. – Pittsburgh |
| Beaver Valley Traction Co. Beaver Falls |
North Cambria Railway Co. – Patton |
| Beaver Valley Traction Co. Economy |
North Cambria Railway Co. Pittsburgh |
| Beaver Wire Co. Beaver Falls |
North Charleroi Elementary School – Charleroi |
| Beazer Pittsburgh |
North Cornwall Furnace Co. – Cornwall |
| Bechtel Bettis, Inc. – Mifflin |
North Cumberland Co. Riverside |
| Bechtel Steel Plant – Martins Creek |
North Hampton High School – North Hampton |
| Becks Run Station – Pittsburgh |
North Huntington Twp High School Irwin |
| Beckwith Mach – Harrisburg |
North Pipe Shop Station 270 Aliquippa |
| Beckwith Machinery – Murraysville |
North Reserve Basin Philadelphia |
| Bedford Memorial Hospital – Bedford |
North Savings Bank – Franklin |
| Bedford Roller Arena – Bedford |
North Sewickley Township Beaver County |
| Bedford Shopping Center – Bedford |
North Side of Industrial Highway – Eddystone |
| Beeber Junior High School – Philadelphia |
North Side Packing Co. – Pittsburgh |
| Beech Bottom Station -Delta |
North Washington School – Apollo |
| Beechwood Inn – Jenkinstown |
North Water Pollution Control Plant Philadelphia |
| Belfonte Works Building N Bellefonte |
Northampton Traction Co. – Easton |
| Bell- Meade SR. Citizen Center – Washington |
North Collierty – Carbondale |
| Bell Telephone – Allentown |
Northeastern Water Co. – Hundsondale |
| Bell Telephone – Altoona |
Northeastern Water Co. |
| Bell Telephone – Bentleyville |
Northern Cambria SR. High School – Barnesboro |
| Bell Telephone – Bethel Park |
Northern Light T- Ak- 284 Chester |
| Bell Telephone – Braddock |
Northern Lights Shopping Center – Baden |
| Bell Telephone – Carnegie |
Northern Metals Co. – Tacony |
| Bell Telephone – Carrick |
Northern Ore Co. Easton |
| Bell Telephone – Clairton |
Northside Cooperage Co. Pittsburgh |
| Bell Telephone – Clarion |
Northview Heights Elementary School – Pittsburgh |
| Bell Telephone – Crabtree |
Northview Housing – Pittsburgh |
| Bell Telephone – Crafton |
Northview Housing, Hazlet & Spring Hill – Pittsburgh |
| Bell Telephone – Dubois |
Northwestern Mining & Exchange Co. Hellen Mills |
| Bell Telephone – Elizabeth |
Northwestern Pennsylvania Railway Co. – Meadville |
| Bell Telephone – Franklin |
Norwin Junior High School – Norwin |
| Bell Telephone – Greensburg |
Norwin Shopping Center – North Versailles |
| Bell Telephone – Holidaysburg |
Nosco – Erie |
| Bell Telephone – Indiana |
Nottingham Colliery – Plymouth |
| Bell Telephone – Johnstown |
Novingers, Inc. – Harrisburg |
| Bell Telephone – Liberty |
NTF Equip Co. – Moon Township |
| Bell Telephone – Ligonier |
Nuclear Mat Equip Corp. Apollo |
| Bell Telephone – McKees Rocks |
Nuclear Materials & Equipment Co. Plant Apollo |
| Bell Telephone – McKeesport |
Nuclear Materials & Equipment Corp. Numec – Apollo |
| Bell Telephone – Murrysville |
Nuclear Power- Foster Wheeler – Panama City |
| Bell Telephone – New Kensington |
Number 1 Number 4 Blast Furnace Johnstown |
| Bell Telephone – Pittsburgh |
Number 10 Breaker Pittston |
| Bell Telephone – Sharon |
Number 2 Shaft Colliery Kingston |
| Bell Telephone – Spangler |
Number 3 Boilder House Nicetown, Philadelphia |
| Bell Telephone – Squirrel Hill |
Number 3 Rollilng Mill – Johnstown |
| Bell Telephone – Tarentum |
Number 4 Breaker Kingston |
| Bell Telephone – Turtle Creek |
Number 4 Rolling Mill – Johnstown |
| Bell Telephone – Uniontown |
Number 5 & Number 6 Blast Furnace – Johnstown |
| Bell Telephone – Washington |
Number 6 & 8 Bolliery Pittston |
| Bell Telephone – Youngwood |
Number 6 Colliery – Inkerman |
| Bell Telephone Building – Philadelphia |
Number 6 Electric Powerhouse – Parsons |
| Bell Telephone Co. – Connellsville |
Number 8 Grutier Mill – Johnstown |
| Bell Telephone Co. Of PA – Warren |
Number 9 Breaker Pittston |
| Bell Telephone Co. Pittsburgh |
Number 9 Collier Pettston |
| Bell Telephone Co. Sharpsburg |
Nursing Home – Butler |
| Bellefield Boder Plant – Pittsburgh |
Nursing Home – Washington |
| Bellefield Hotel – Pittsburgh |
Nutec Tooling Systems – Meadville |
| Bellefonte Electric Co. – Bellefonte |
Nutrition Products – Philadelphia |
| Bellefonte Gas Co. – Bellefonte |
Nuttal Works – Pittsburgh |
| Belleour Stratford Hotel Co. – Philadelphia |
NY PA Co. Johnsonburg |
| Bellevue Stratford Hotel Co. – Philadelphia |
O Amos Co. Div McDonough C Philadelphia |
| Bellfield Boiler House Panther Hollow – Oakland |
O Hora John F & Sons Scranton |
| Belmont Oil Works Belmont Petroleum Refinery Philadelphia |
O. C. Cluss Lumber Co. – Union City |
| Belmont Oil Works Philadelphia |
O. F. Zurn Philadelphia |
| Belmont Petroleum Refinery – Philadelphia |
O. Hommel Co. – Carnegie |
| Belmont Refinery – Point Breeze |
Oak Summit Apartments – Philadelphia |
| Belton Wire Corp. – Washington |
Oak Summit Apts – Philadelphia |
| Bement, Miles & Co. – Philadelphia |
Oakhurst Homes – Johnstown |
| Ben Franklin Elementary School – Levittown |
Oakmont Elementary School – Oakmont |
| Ben Franklin Hotel – Philadelphia |
Oakmont High School – Oakmont |
| Bendix Aircraft – Philadelphia |
Oakmont Medical Center – Oakmont |
| Bendix Corp. – Wilkes Barre |
Oakmont Water Treatment Plant – Oakmont |
| Bendix Westinghouse Co. – Wilmerding |
Oakwood School – View |
| Benjamin Foster Co. – Philadelphia |
O’Brien Machinery Co. |
| Benjamin Franklin Elementary – Philadelphia |
O’Brien Machinery Co. – Philadelphia |
| Benjamin Franklin Elementary School – Philadelphia |
Obrien Rubber Co. Thread & Webbing Co. Catasauqua |
| Benjamin Franklin Junior High School – New Castle |
Occidental Chemical Co. Pottstown |
| Benjamin Rush Middle School – Philadelphia |
Ocean Coal Co. – Herminie |
| Bennett & Aspen – Philadelphia |
Ocean Coal Co. Philadelphia |
| Bennett Station – Wilkes Barre |
Office & Whse. R. C. A. – Lancaster |
| Bennett Steel, Inc. – Wilkes Barre |
Office Building 1500 Walnut Street Philadelphia |
| Bensalem High School – Bensalem |
Office Warehouse R. C. A. Lancaster |
| Bensol Boiler House Clairton Works Clairton |
Ohio & Pittsburgh Milk Co. – Pittsburgh |
| Bensol Plant Coke Oven Division Bethlehem |
Ohio Pennsylvania System – New Castle |
| Benzol Products Co. – Maple Glen |
Ohio Power Co. Philadelphia |
| Benzol Products Co. Marcus Hook |
Ohio Rubber Co. – Conneautville |
| Bepsilon Zeta Alumni Association Pi – Philadelphia |
Ohio Service Co. – Philadelphia |
| Beravac Funeral Home – Clairton |
Ohio Spring Specialties Leechburg |
| Berg St – Johnstown |
Oil City Glass Co. Division Natl Can Oil City |
| Bergner & Engle Brewing Co. – Philadelphia |
Oil City, Health Center – Oil City |
| Berillium Corp. – Temple |
Oil Heat Service Middleburg |
| Berks Refining Co. – Pottstown |
Oil Refinery Oil City |
| Berks Vocational School – Berks County |
Oil Tanks – McKees Rocks |
| Berkshire Insulation Co. Reading |
Oil Well Supply Co – Oil City |
| Berliner Co. Joseph – Philadelphia |
Oilwell Div US Steel Oil City |
| Berry Metals – Mars |
Oklahoma City Philadelphia |
| Bers & Co. – Philadelphia |
Oklahoma Gas & Electric – Ponca City |
| Berwick Forge & Fabricating – Berwick |
Okonite Co. – Wilkes Barre |
| Berwick Hospital – Berwick |
Okonite Co. Hazard Wire Rope Wilkes Barrre |
| Berwick Nuclear Station – Wilkes Barre |
Old Croatin School – New Castle |
| Berwick, City Of – Berwick |
Old Folks Home – Holidaysburg |
| Berwin White Coal Co. Windber |
Old Forge Breaker – Dunmmon |
| Berwin White Coal Mining Co. – Philadelphia |
Old Forge Collieries – New Avoca |
| Berwind Coal Co. – Johnstown |
Old Forge Collieries Scranton |
| Berwind White Coal Mining Co. Dubois |
Old Fourth Ward School – Pittsburgh |
| Berwind White Coal Mining Co. Dunlo |
Old Meadow Works – Pittsburgh |
| Berwind White Coal Mining Co. Eureka |
Old Penn Railroad Station |
| Berwind White Coal Mining Co. Horatio |
Old Reading Brewery, Inc. Reading |
| Berwind White Coal Mining Co. Lindsey |
Oldman Boiler Works – Erie |
| Berwind White Coal Mining Co. Osceola |
Olin Mathieson Chemical – Lake Charles |
| Berwind White Coal Mining Co. Philadelphia |
Olin Mathieson Chemical Corp. – McKees Rocks |
| Berwind White Coal Mining Co. Scalp Level |
Oliver & Roberts Wire Co. – Pittsburgh |
| Berwind White Coal Mining Co. Windber |
Oliver & Snyder Steel Co. – Pittsburgh |
| Beryllium Corp. – Hazleton |
Oliver & Snyder Steel Co. Allegheny |
| Beryllium Corp. Reading |
Oliver & Snyder Steel Co. Oliver |
| Beryllium Corp. Temple |
Oliver & Snyder Steel Co. Pittsburgh |
| Bessemer & Lake Erie Railroad Co. – Greensburg |
Oliver Building – Pittsburgh |
| Bessemer Cement – New Castle |
Oliver Iron & Steel Co. – Pittsburgh |
| Bessemer Coke Co. – Pittsburgh |
Oliver Iron Mining Co. – Pittsburgh |
| Bessemer Limestone Co. – Walford |
Oliver Iron Steel Co. – Pittsburgh |
| Bessemer Steel Works – Johnstown |
Oliver Nace Greenhouse – Perkasie |
| Bethayres Co. – Bethayres |
Oliver Snyder Steel Co. – Oliver |
| Bethel Park Borough- Sewage Treatment Plant – Bethel Park |
Oliver Wire Co. Limited Pittsburgh |
| Bethel Park Municipal – Bethel Park |
Olmsted Air Force Base – Middletown |
| Bethel Senior High School – Pittsburgh |
Olmsted Field |
| Bethlehem City Water Co. – S. Bethlehem |
Olney High School – Philadelphia |
| Bethlehem Cornwall – Cornwall |
Olsen Industries Inc. Carnegie |
| Bethlehem Corp. Easton |
Olson Engineering Co. Pittsburgh |
| Bethlehem Energy – Johnstown |
Olyphant Colliery – Olyphant |
| Bethlehem Fairfield Shipyard, Inc. – Bethlehem |
Olyphant Power Plant – Olyphant |
| Bethlehem Foundry Machine Bethlehem |
Omaha & Council Bluffs Railway & Bridge Co. – Council Bluffs |
| Bethlehem Ironworks – Bethlehem |
Omg Americas – Johnstown |
| Bethlehem Jr. Sr. High School – Deemston Boro |
Onderdonk Heating & Ventilating Co. – Philadelphia |
| Bethlehem Lukens Plate Products Coatesville |
Oneida Colliery – Oneida |
| Bethlehem Mine Plant Cornwall |
Oneida Mining Co. Armagh – Bush Valley |
| Bethlehem Mine Plant Morgantown |
Oneida Mining Homer City |
| Bethlehem Mines Corp. – Ebenburg |
Onex Inc. – Erie |
| Bethlehem Mines Corp. Ebensburg |
Onoponca City Chester |
| Bethlehem Mines Corp. Hanover Quarry Hanover |
Open Hearth Division – Homer City |
| Bethlehem Plant – Bethlehem |
Open Hearth Plants – Johnstown |
| Bethlehem Silk Co. – Bethlehem |
Orient Coal & Coke Co. – New Salem |
| Bethlehem Steel Co Pipe Shop Saucon Division – Bethlehem |
Orient Coal & Coke Co. Uniontown |
| Bethlehem Steel Co. – Allentown |
Orient Coke Co. – Orient |
| Bethlehem Steel Co. # 1-4 Shop Warehouse Lehigh Division Bethlehem |
Orinoka Mills – Philadelphia |
| Bethlehem Steel Co. Allentown |
Orion Power Holdings Inc. – New Castle |
| Bethlehem Steel Co. Ambridge |
Orion Power Holdings Inc. Elrama |
| Bethlehem Steel Co. Boiler House #2 Bethlehem |
Orion Power Midwest, Llc Pittsburgh |
| Bethlehem Steel Co. Brick Storage Stop 242 Johnstown |
Orion Power Midwest, Llc. – Elrama |
| Bethlehem Steel Co. Central Boilers End Yard Steelton |
Orr & Sembower Inc. – Reading |
| Bethlehem Steel Co. Coal Mines – Johnstown |
Orr & Sembower Inc. Middletown |
| Bethlehem Steel Co. Cornwall |
Orr Sembower Inc. Reading |
| Bethlehem Steel Co. Dunaghmore |
Orrtanna Canning Co. – Orrtanna |
| Bethlehem Steel Co. Easton |
Osborn Machine Co. – Dubois |
| Bethlehem Steel Co. Edensburg |
Oscar Meyer Meats – Philadelphia |
| Bethlehem Steel Co. End Yards Supply Department Steelton |
Oswald & Hess Co. Inc. – Pittsburgh |
| Bethlehem Steel Co. Franklin Works Johnstown |
Otis Steel Co. – Pittsburgh |
| Bethlehem Steel Co. Franklin |
Otto Milk Co. Pittsburgh |
| Bethlehem Steel Co. Hanover |
Our Lady of Mercy Academy – Monroeville |
| Bethlehem Steel Co. Hellertown |
Our Lady Of Mercy School – Monroeville |
| Bethlehem Steel Co. Homer Research Labs – Bethlehem |
Our Lady Of Mt. Carmel Convent – Carbondale |
| Bethlehem Steel Co. Hussey Copper Plant – Leetsdale |
Our Lady of Peace Church – Conway |
| Bethlehem Steel Co. Indianatown Gap |
Overbroock Steam Heat Co. – Philadelphia |
| Bethlehem Steel Co. Joanna |
Overbrook Steam Heat Co. – Overbrook |
| Bethlehem Steel Co. Johnstown |
Overbrook Steam Heat Co. Uplant Way Philadelphia |
| Bethlehem Steel Co. Lebanon |
Overhead Door Co. – Lewistown |
| Bethlehem Steel Co. Leetsdale |
Owen-Corning Fiberglass Corp. – Philadelphia |
| Bethlehem Steel Co. Lehigh Pipe Shop – Bethlehem |
Owens Corning Fiberglas – Ephrata |
| Bethlehem Steel Co. Lehigh |
Owens Corning Fiberglass – Berwick |
| Bethlehem Steel Co. Manessa |
Owens Illinois – Bardstown |
| Bethlehem Steel Co. Mines Johnstown |
Owens Illinois Glass Co. – Clarion |
| Bethlehem Steel Co. Nbr 4 Shop Warehouse Bethlehem |
Owens-Corning Fiberglas Corp. Berwick |
| Bethlehem Steel Co. Neville Island |
Owens-Corning Fiberglas Corp. Berwyn |
| Bethlehem Steel Co. New Flange Structural Mill – Bethlehem |
Owens-Corning Fiberglas Corp. Ephrata |
| Bethlehem Steel Co. Pipe Shop Lehigh Division – Bethlehem |
Owens-Corning Fiberglas Corp. Huntington |
| Bethlehem Steel Co. Pipe Shop Lehigh Division Bethlehem |
Owens-Corning Fiberglas Corp. Philadelphia |
| Bethlehem Steel Co. Pittsburgh |
Owens-Corning Glass Co. Bardstown |
| Bethlehem Steel Co. Plant Ingot Mold Foundry Bethlehem |
Owens-Corning Glass Co. Brookville |
| Bethlehem Steel Co. Redington Schrapnel Department 3 |
Owens-Corning Glass Co. Clarion |
| Bethlehem Steel Co. Research Center – PA |
Owens-Corning Glass Co. Claxton |
| Bethlehem Steel Co. Steel Mill Bethlehem |
Owens-Illinois – Brookville |
| Bethlehem Steel Co. Steel Mill Johnstown |
Owens-Illinois Container Division Clarion |
| Bethlehem Steel Co. Steelton Central Boilers Dept |
Owens-Illinois Fiberglass Co. Croydon |
| Bethlehem Steel Co. Track 514 Truck Stop 173 Mech. Johnstown |
Owens-Illinois Fiberglass Co. Pittston |
| Bethlehem Steel Co. Truck Stop 242 Johnstown |
Owens-Illinois Glass Plant Clarion |
| Bethlehem Steel Corp. Coatesville |
Oxford Cabinet Co. – Oxford |
| Bethlehem Steel Corp. Ellsworth |
Oxford, Blawnox |
| Bethlehem Steel Corp. Johnstown |
Oxy- Loy Allentown |
| Bethlehem Steel Corp. Lebanon |
Oxychem Berwyn |
| Bethlehem Steel Corp. Steel Mill Ellsworth |
Oxygen Plant – Creighton |
| Bethlehem Steel Mill – Bethlehem |
Oxygen Plant – Natrona Hts |
| Bethlehem Steel Research Center – Bethlehem |
Ozenda Smokeless Coal Co. – Bosewell |
| Bethlehem Steel Shipyard – Bethlehem |
P & L. E. Railroad – Pittsburgh |
| Bettis Atomic Power Laboratory – Mifflin |
P & Le Railroad – McKees Rocks |
| Betty Brackly, Lynsk – Philadelphia |
P G H Steamline – Philadelphia |
| Betty Brackly-Lynsk – Philadelphia |
P Le Railroad Beaver Falls |
| Betz Labs – Trevose |
P P & L Office Building – Kingston |
| Beulah Church – Murrysville |
P P G Industries Inc. Meadville |
| Beyer William & Kathleen – Drexal Hill |
P P G Industries Inc. Springdale |
| BF Goodrich Co. Oaks |
P P L Office Building Kingston |
| Bicking Paper Mills – Downington |
P& Le Railroad McKees Rocks |
| Bickley Furnaces, Inc. – Philadelphia |
P. A. Power & Light |
| Biel’s Ashland Gas Station – Greenville |
P. A. Power & Light – Sunbury Station – Sunbury |
| Big E Coal Mine – Twilight |
P. A. S. Small York |
| Big Run Milling Co. – Big Run |
P. C. C. St. L. Railway Co. – Pittsburgh |
| Big Run Milling Co. Big Run, Jefferson County |
P. D. M. – Clairton |
| Big Wheel – Waynesburg |
P. F. Magin & Co. – Pittsburgh |
| Bilc Super Market – Philadelphia |
P. F. Magin & Co. Jones & Laughlin Bldg Pittsburgh |
| Binder Cooperage – Philadelphia |
P. G. H. Steamline Ship Co. |
| Bindley Hardware Co. Pittsburgh |
P. H. Berman & Sons – Philadelphia |
| Bingham House – Philadelphia |
P. H. Berman Sons Philadelphia |
| Binney & Smith, Inc. – Easton |
P. H. Gladfelter Co. Spring Grove York |
| Bird Coal Co. – Tire Hill |
P. H. Glatfelter Co. Gladfelter Bldg Spring Grove |
| Bird Coleman Furnaces – Cornwall |
P. I. C. C. O. Chemical – Elizabeth |
| Birdsboro Corp. – Birdsboro |
P. J. Ritter Co. – Philadelphia |
| Birmingham School – Bingham |
P. L. McKees Rocks |
| Bishop Tube Co. – Frazer |
P. McGraw & Wool Co. Allegheny |
| Bissell & Co. – Pittsburgh |
P. McGraw Wool Co. Pittsburgh |
| Bituminous Coal – Monroeville |
P. P. & L. – Turbine |
| Black & Germer – Erie |
P. P.& L. – Turbine – Lower Mount Bethel |
| Black Burn Russell Co. – Bedford |
P. P.G. Industries – Pittsburgh |
| Black Liquer Oxidation System – Spring Grove |
PA Department of Revenue – Pittsburgh |
| Black River Chester |
PA Forge Div of Chertron Corp – Philadelphia |
| Blackwood Colliery – Blackwood |
PA Institute for The Instruction of The Blind – Philadelphia |
| Blackwood Colliery Orwigsburg |
PA Mall Iron Corp. Lancaster |
| Blair Fuel Co. Robindale |
PA Railroad Station – 12Th Penn |
| Blakeley – Philadelphia |
PA Soldiers & Sailors Home – Erie |
| Blakely Borough Municipal Electric Plant – Blakely |
PA State Highway Department – Harrisburg |
| Blast Furnace Dept. Swedeland Conshohocken |
PA Transformers Canonsburg |
| Blast Furnace Division Chester |
PA Liquor Control Board – Youngwood |
| Blatts Chemical Laboratory – Feasterville |
Pabst Brewing Co. – Fogelsville |
| Blaw Knox Co. Pittsburgh |
Pacific Railroad Western Lines – Conway |
| Blaw-Knox – Butler |
Packard Building – Philadelphia |
| Blaw-Knox Chemical – South Bend |
Packer Colliery #4 #5 Lost Creek |
| Blaw-Knox Co. – Blawknox |
Pacor – Chester |
| Blaw-Knox Co. Butler |
Pacor Inc. – Philadelphia |
| Blaw-Knox Co. Coraopolis |
Page Steel Wire Co. Monessen |
| Blaw-Knox Co. Ellwood City |
Page Woven Wire Fence Co. – Monesson |
| Blaw-Knox Co. Pittsburgh |
Paintertown School Paintertown |
| Blawnox Mill – Blawknox |
Pakistan Industrial Development Corp. Daud Khel |
| Blind Floral Co. Pittsburgh |
Pala, LLC, & – Pala, Inc. |
| Bliss Silk Throwing Co. Jessup Plant Dickson City |
Palladinon Pottstown |
| Blooming Mill – Johnstown |
Palmerton Elementary – Palmerton |
| Blooming Mill Johnstown |
Palmerton Zinc -Bethlehem |
| Bloomsburg Heating Co. – Bloomsburg |
Palmerweld Fabricating Co. – Ambler |
| Bloomsburg Mills – Bloomsburg |
Palumbo Chevrolet – Clairton |
| Blossburg Coal Mining & Railroad Co. – Arnot |
Pangborn Corp. – Bethlehem |
| Blossom Products Corp. – Allentown |
Paoli Elementary Paoli |
| Blue Bell, Inc. Reading |
Paoli Elementary School – Paoli |
| Blue Flame Burners Inc. Pittsburgh |
Paper Manufacturers – Philadelphia |
| Blue Ridge Traction Co. – Danielsville |
Paper Manufacturing Co. – Philadelphia |
| Blue Ridge Winkler Textile Co. – Bangor |
Paper Mill Lock Haven |
| Bluffs Railway & Bridge Co. Council Bluffs |
Papercraft Plant – Pittsburgh |
| Blumenthal Bros Choc Co. Philadelphia |
Parade Lumber Co. – Erie |
| Blumenthal Brothers – Philadelphia |
Paragon Packaging Product Inc. – Girard Point |
| Blumenthal Brothers Choco. Philadelphia |
Paris Construction – Atlasburg |
| Board Of Education – Mechanicsburg |
Parish Div. Dana Reading |
| Board Of Education Buildings – Philadelphia |
Parish House – Carnegie |
| Bob Miller Real Estate – Meadville |
Parish Pressed Steel Co. Birdsboro |
| Bodwell Co. – Harrisburg |
Parish Pressed Steel Co. Bucks |
| Boehm Manufacturing Co. – Connellsville |
Parish Pressed Steel Co. Reading |
| Boehm Manufacturing Co. – Conshohocken |
Park – Bridgeville |
| Boeing Aircraft Plant – Reading |
Park & Tilford Distillery Co. – Brownsville |
| Boeing Co. Eddystone |
Park City Mall Lancaster |
| Boeing Co. Ridley Park |
Park City Shopping Center – Park City |
| Boeing Helicopter Plant – Morton |
Park City Shops – Route 30 Bypass – Lancaster |
| Boeing Vertol – Eddystone |
Park City Stores – Park City |
| Boeing Vertol Co. Philadelphia |
Park Hill Mall – Altoona |
| Boeing Vertol Morton |
Park Hospital – Philadelphia |
| Boeing Vertol Ridley Park |
Park Hotel – Wiliamsport |
| Boeing Vertol Ridley Township |
Park Shops – Mantua |
| Boericke & Tafel Building – Philadelphia |
Park Steel Co. – Pittsburgh |
| Boger & Crawford – Philadelphia |
Park Steel Works – Pittsburgh |
| Boggs Buhl, Diamond St. & Alley Allegheny City |
Park Works – Pittsburgh |
| Boiler Engineer Supply Co. Phoenixville |
Parkersburg Iron & Steel Co. – Pittsburgh |
| Boiler Erection Repair Ambler |
Parkesburg Iron Co. – Parkesburg |
| Boiler Service, Inc. – Spring House |
Parkview Court Apartments |
| Boiler Tube Co. of America – McKees Rocks |
Parkway Apartments – Harrisburg |
| Boivaird & Seyfang Fab Shop – Bradford |
Parkway Center Mall Greentree |
| Bok Technical High School – Philadelphia |
Parkway Manor Elementary School – Lehigh County |
| Bollinger Andrews Construction Co. – Fayette |
Parsons Insulation Wilkes Barre |
| Bollinger Brothers – Pittsburgh |
Pasadena School District – Pasadena |
| Bon Secours Holy Family Hospital – Altoona |
Pascagoula Street Railway & Power Co. – Scranton |
| Bonair Foundry Co. – Philadelphia |
Passavant Home – Rochester |
| Bonded Products – Chester |
Passavant Hospital – Pittsburgh |
| Bonney Forge & Tool Works – Allentown |
Pat & Reds Tire |
| Bonney Forge Tool Works Allentown |
Pat & Reds Tire Waymart |
| Bonney Frg Division – Allentown |
Paterson Parchment Paper Co. – Bristol |
| Bonney Tool & Forge Works – Allentown |
Paterson Parchment Paper Co. Edgley |
| Booster Boiler House Saucon Plant – S. Bethlehem |
Pathfinder School – Bethel Park |
| Borg Warner Corp. – York |
Patterson Equipment Co. – Carnegie |
| Bornet Cleaners – Philadelphia |
Patterson- Kelly Corp. – Stroudsburg |
| Bornot, Inc. – Philadelphia |
Paul & Beekman Co. Philadelphia |
| Borough Of Blawnox – Blawknox |
Paul B. Hendel & Co. – Reading |
| Borough of Grove City – Sewage Plant Grove City |
Paul Bronze & Brass Corp. – Eddington |
| Borough Of Phoenixville – Phoenixville |
Paul E. Berry-Excavating Contractor Richland |
| Borough Of Quakertown – Quakertown |
Paul E. Stare Plumbing Heating Mechanicsburg |
| Borough Of Schuylkill Haven – Schuylkill Haven |
Paul Lumber & Supply Co. – Pittsburgh |
| Borough Of Tarentum – Tarentum |
Paul Thompson Sand & Gravel – Mercer |
| Borzillo Bakery Inc. Morristown |
Paul W. Anderson – Stroudsburg |
| Boston & Ohio Railroad – Philadelphia |
Paulson Abbot Inc. Croydon |
| Boston & Ohio Railroad Co. – Connellsville |
Pawcatuck – Chester |
| Boston Brick Co. Boston |
Pawhattan Coal & Coke Co. – Sykesville |
| Boston Colliery – Kingston |
Paxtang Electric Co. – Harrisburg |
| Boston Colliery Kingston |
Paxton Iron & Steel Co. – Harrisburg |
| Boston Iron & Steel Co. – McKeesport |
Paxtron Furnaces – Harrisburg |
| Boston Ohio Railroad Co. Connellsville |
Pbs Coal Co. – Central City |
| Boston Ohio Railroad Co. Glenwood |
Pc& Y Railroad – McKees Rocks |
| Boston Ohio Railroad Co. New Castle |
Peabody Vertical Air Heater – Newell |
| Boston Ohio Railroad Co. Philadelphia |
Peach Bottom Atomic Power Station – Erie |
| Boston Ohio Railroad Co. Pittsburgh |
Peach Bottom Atomic Power Station Unit 2 & 3 Delta |
| Botany 500 – Philadelphia |
Peach Bottom Nuclear Plant – Peach Bottom |
| Botfield Refractories Co. – Philadelphia |
Peach Bottom Nuclear Plant York County |
| Bovaird Co. Bradford |
Peach Bottom Nuclear Power – Peach Bottom |
| Bowling Alley – Altoona |
Peachbottom Nuclear Plant Unit 2 Delta |
| Bowman Trucking – Indiana |
Peachbottom Powerhouse – Philadelphia |
| Boyce Park – Freeport |
Peachbottom Powerhouse Delta |
| Boyertown Burial Casket Co. Boyertown |
Pearson Manufacturing Co. Inc – Pittsburgh |
| Bp Oil Co. – Trainer |
Pebbco. Industries Lancaster |
| Bp Oil Corp. Marcus Hook |
Peccora Inc. Philadelphia |
| Bp Oil Corp. Philadelphia |
Peckerman Co. – Philadelphia |
| Bp Oil Philadelphia |
Peco – Eddystone Station Power Plant – Eddystone |
| BP Oil Sinclair Refinery Trainer |
Peco Barbados Island Powerhouse – Norristown |
| Bp Oil Trainer |
Peco Cromby Station – Phoenixville |
| BP Refinery Chester |
Peco Croydon Powerhouse – Croyden |
| Bpeco Energy Co. – Philadelphia |
Peco Delaware Station Powerhouse – Philadelphia |
| Bra- Vor Inc. – Meadville |
Peco Eddystone Station Powerhouse – Eddystone |
| Brace Compressor Station – Braceton |
Peco Energy Co. – Philadelphia |
| Brackenridge Works Soaking Pit – Brakenridge |
Peco Energy Conshohocken Gas Plant Conshohoken |
| Braddock & Turtle Creek Electric Railway – Braddock |
Peco. Cromby Power Plant Phoenixville |
| Braddock General Hospital – Braddock |
Peco-Barbados Island Powerhouse – Norristown |
| Braddock Hospital – Pittsburgh |
Peco-Cromby Station – Norristown |
| Braddock Hospital – Warehouse – Pittsburgh |
Peco-Philadelphia Electric Philadelphia |
| Braddock Wire Co. – Pittsburgh |
Peerless Dye Co. – Philadelphia |
| Braddock Wire Co. Rankin |
Penacol Plant Chemical Division Petrolia |
| Bradford Hospital – Bradford |
Pencoyd Ironworks – Pencoyd |
| Bradford Mall – Bradford |
Pencoyd Ironworks Philadelphia |
| Bradford Oil Refining – Bradford |
Penelec Power Plant – Shawville |
| Bradford Supply Co. – Bradford |
Penhurst State Institute |
| Bradford Supply Co. Lawton Lease |
Penhurst State Institute – Spring City |
| Bradlee & Co. – Philadelphia |
Penn- Allen Cement Co. Nazareth |
| Bradlee Co. Philadelphia |
Penn- Allen Portland Cement Co. Allentown |
| Bradshaw & Co. – Pittsburgh |
Penn- Allen Portland Cement Co. Bath |
| Braeburn Alloy – Lower Burrell |
Penn Aluminum – Erie |
| Braeburn Alloy Braeburn |
Penn Aluminum Murphysboro, IL |
| Braeburn Alloy Steel – Lower Burrell |
Penn Argyl High School – Pen Argyl |
| Braeburn Alloy Steel Corp. Braeburn |
Penn Bank – Franklin |
| Braeburn Steel Co. Braeburn |
Penn Boiler & Construction |
| Braeburn Steel Co. New Kensington |
Penn- Bradford Appl. Philadelphia |
| Braeburn Steel New Kensington |
Penn Bradford Co. – Philadelphia |
| Brand Insulation – Philadelphia |
Penn Center – Latrobe |
| Brand Mid Atlantic Inc. Philadelphia |
Penn Center Building – Philadelphia |
| Brandley Smith – Philadelphia |
Penn Center Two Philadelphia |
| Brandywine Mushroom Co. – Chester |
Penn Central Altoona |
| Breading Paperboard Corp. – Sinking Springs |
Penn Central Enola |
| Breading Paperboard Corp. Sinking Spring |
Penn Central Holidaysburg |
| Breaker Boiler House – Glen Lyon |
Penn Central Light & Power Co. Altoona |
| Breckinridge – Philadelphia |
Penn Central Light & Power Co. Saxton |
| Bregy Elementary School – Philadelphia |
Penn Central Railroad – Altoona |
| Bremans Express Pittsburgh Terminal Pittsburgh |
Penn Central Railroad Philadelphia |
| Brent Builders – Verona |
Penn Central South Altoona |
| Bressler Metal Works Lebanon |
Penn Dairies – Lancaster |
| Bricklayer’s Union Local 1 – Philadelphia |
Penn Dairies Pottsville |
| Bricmont & Associates – MacMurray |
Penn Dairies, Inc. – York |
| Bricmont & Associates |
Penn Dixie Cement Corp. Nazareth |
| Bridge Shop – Pencoyd |
Penn Dixie Cement Corp. Plant # 9 Winfield |
| Bridgeville Bottling Co. – Bridgeville |
Penn Electric – Warren |
| Bridgeville Plant |
Penn Electric Co. Shawville |
| Bridgeville Sales – Bridgeville |
Penn Electric Johnstown |
| Bridgewater Paper Co. – Bridgewater |
Penn- Electric Powerhouse – Erie |
| Brier Hill Coke Co. Brier Hill |
Penn Electric Warren |
| Brier Hill Coke Co. Union City |
Penn Fishing – Philadelphia |
| Brier Hill Coke Co. Uniontown |
Penn Fruit Co. – Philadelphia |
| Briggs Co. – Somerset |
Penn Gas Coal Co. Irvin |
| Brinton Brothers New Cumberland |
Penn Hardware Co. – Reading |
| Bristol Steel Mill – Bristol |
Penn Heat & Power Co. Wilkinsburg |
| Bristol Steel Treating Co. Bristol |
Penn High School – Kingston |
| Bristol Water Works – Bristol |
Penn Hills High School – Penn Hills |
| British Petroleum Co. Marcus Hook |
Penn Hospital – Pittsburgh |
| British Petroleum Co. Trainer |
Penn Iron – Creighton |
| British Petroleum Oil Sinclair Refinery Trainer |
Penn Iron Creighton |
| British Petroleum Refinery Marcus Hook |
Penn Jersey Boiler & Construction Inc. |
| British Petroleum Refinery Trainer |
Penn Jersey Boiler Co. – Pennsauken |
| Broad Ford |
Penn Jersey Transmission Corp. Bechtelsville |
| Broad Meadows Farm Delaware County Prison – Delaware City |
Penn Jersey Transmission Corp. Boyertown |
| Broad Meadows Farm Prison Delaware County |
Penn Jersey Transmission Corp. Grantville |
| Broad Mountain Manor Nursing Home – Frackville |
Penn Jersey Transmission Corp. Lilly |
| Broad St. Station – Philadelphia |
Penn Jersey Transmission Corp. Perulack |
| Broad Street Station – Philadelphia |
Penn Machine Co. – Johnstown |
| Broad Top Power Co. – Saxton |
Penn Mall Iron – Landisville |
| Broad Top Railroad & Coal Co. – Orbisonia |
Penn Manor School District – Lancaster |
| Brobst Aluminum Ephrata |
Penn Manufacturer Brackenridge |
| Brockway Glass – Clarion |
Penn Manufacturing Light Ht. & Power Co. – Philadelphia |
| Brockway Glass Co. Brockway |
Penn Middle School – Greenville |
| Brockway Glass Co. Clarion |
Penn Mo Fire Brick Co. – Harrisburg |
| Brockway Glass Co. Inc. – Washington |
Penn Mo Firebrick Co. – Pittsburgh |
| Brockway Pressed Metals – Brockway |
Penn Optical – Reading |
| Bromley Lace Mill – Philadelphia |
Penn Power Co. Armstrong Power Station Kittanning |
| Brooks Brothers – Philadelphia |
Penn Power Co. Armstrong Station, Unit #2 Rosedale |
| Brookville Hospital – Brookville |
Penn Power Co. Courtney |
| Brookwood Coal Co. – Frackville |
Penn Power Co. Greensburg |
| Brookwood Colliery Frackville |
Penn Power Co. Homer City |
| Brothers Valley Coal Co. – Brothers Valley Township |
Penn Power Co. Milesburg |
| Broudy Precision Equipment Philadelphia |
Penn Power Co. Mitchell Power Station Monongahela |
| Brown & Co. Inc – Pittsburgh |
Penn Power Co. Mitchell Power Station Unit No 3 Courtney |
| Brown & Co. Inc. – Pittsburgh |
Penn Power Co. Mitchell Station Unit 3 Courtney |
| Brown Brothers & Co. – Philadelphia |
Penn Power Co. New Castle |
| Brown Instrument Co. – Philadelphia |
Penn Power Co. New Eagle |
| Browning, King & Co. Building – Philadelphia |
Penn Power Co. Pittsburgh |
| Browning, King, & Co. B’Lding – Philadelphia |
Penn Power Co. Power Station Unit #8 Springdale |
| Browns Instrument Division Philadelphia |
Penn Power Co. R. W. Bigley Power Station Springdale |
| Brownstown Vo-Tech Building – Brownstown |
Penn Power Co. Reesedale |
| Brownsville General Hospital – Brownsville |
Penn Power Co. Ridgway |
| Brownsville Golden AGE Nu Brownsville |
Penn Power Co. Williamsburg |
| Bruce Industrial Controls Horsham |
Penn Power Light Montour Station Washingtonville |
| Bruce Mansfield Power Plant – Sharon |
Penn Power Office – Greensburg |
| Bruce Mansfield Power Station – Shippensburg |
Penn Powerhouse – Milesburgh |
| Brunner Island Plant Unit #2-3 York Haven |
Penn Public Service Corp. Johnstown |
| Brunner Island Power Plant Westinghouse – York Haven |
Penn Public Service Corp. Philipsburg |
| Brunner Island Power Station -York Haven |
Penn Public Service Corp. Seward |
| Brunner Island Station Unit 2, 3 York Haven |
Penn Range Co. – Philadelphia |
| Brunot Island Generating Station Corliss, Alleghany County |
Penn Refractories Co. – Reading |
| Brunot Island Generating Station Storeroom Pittsburgh |
Penn Republic Service Corp. – Seward |
| Brunots Island – Pittsburgh |
Penn Rilton Co. Elizabeth |
| Brunot’s Island Powerhouse – Pittsburgh |
Penn Sheraton Hotel – Philadelphia |
| Brunswick Asbestos Co. Inc. – Philadelphia |
Penn Shovel Co. Corry |
| Brunswick Fabricators – Philadelphia |
Penn State College – Altoona |
| Brush Electric Light Co. – Philadelphia |
Penn State College – Dormitory – Star Junction |
| Bryant School – Philadelphia |
Penn State Educational Association Building – Harrisburg |
| Bryce Brothers Glass Factory – MT. Pleasant |
Penn State Nuclear Plant – Penn State |
| Bryden America Plant – Hanover Industrial Park – Hanover |
Penn State University – Altoona |
| Bryden Horseshoe Co. – Catasauqua |
Penn State University – Hub Building |
| Bryn Mawr Hospital – Bryn Mawr |
Penn State University – Johnstown |
| Bryton Chemical Co. – Trainer |
Penn State University – McKeesport |
| Bryton Chemical Co. Chester |
Penn State University – New Kensington |
| Buchanan Lumber Co. – Altoona |
Penn State University – State College |
| Buck County Electric Railway Co. – Newtown |
Penn State University – University Park |
| Buck Hill Falls Inn – Buck Hill Falls |
Penn Steel Co. Philadelphia |
| Buck Iron Co. Inc. Quarryville |
Penn Steel Co. Steelton |
| Buck Mount Colliery #3 – Mahanoy City |
Penn Tech Paper Mill – Johnsonburg |
| Buck Run Coal Co. – Minersville |
Penn Township Junior High School – Pittsburgh |
| Buck Run Coal Co. Rohnerville |
Penn Traffic Store Somerset |
| Buckhorn Portland Cement Co. – Philadelphia |
Penn Treaty American Corp. – Philadelphia |
| Bucknell University – Kingston |
Penn Treaty Overall – Philadelphia |
| Bucks County Community College – Newtown |
Penn Ventilator Co. Philadelphia |
| Bucks Run Station Pittsburgh |
Penn Water Co. Ethel Park |
| Bucyrus Erie – Erie |
Penn. Allen Port Cement Co. – Allentown |
| Bucyrus- Erie Co. Glassport |
Penn. Steel Co. – Philadelphia |
| Bud Gourmet – Robinson Township |
Penna Gen’L Imp. Co. – Philadelphia |
| Budd Co. Bridgeport |
Penna Hospital – Philadelphia |
| Budd Co. Connellsville |
Penna Lines of Pittsburgh |
| Budd Co. Conshohocken |
Penna Railroad Co. – Philadelphia |
| Budd Co. Philadelphia |
Penna Railroad Lines of Pittsburgh |
| Budd Co. Polychem Division Bridgeport |
Penna Tri-State Home Improvement Co. Lawn |
| Budd Co. Red Lion |
Penna Tunnel & Terminal Railroad Co. |
| Budd Red Line Co. Philadelphia |
Penna, New York & Long Island RR Co. |
| Buffalo & Pittsburgh Railroad Butler |
Penna. Manufacturing Light & Power Co. – Philadelphia |
| Buffalo & Susquehanna Coal & Coke Co. – Big Run |
Penna. State Hospital – Philadelphia |
| Buffalo Hardware Stove Co. – Freemans Run |
Penn-Allen Cement Co. – Nazareth |
| Buffalo Pittsburgh Railroad Butler |
Penn-Allen Portland Cement Co – Bath |
| Buffalo Susquehanna Coal Coke Co. Big Run |
Penn-Allen Portland Cement Co. – Allentown |
| Buffalo Susquehanna Coal Coke Co. Dubois |
Penn-Bradford Appl. – Philadelphia |
| Buffalo Susquehanna Coal Coke Co. North Juneau |
Pennco Industries Warren |
| Buffalo Susquehanna Coal Coke Co. Sagamore |
Penn-Dixie Cement Co. |
| Buhl Club – Sharon |
Pennfuels Clymer |
| Buhl Steel Co. – Sharon |
Pennhurst St School Spring City |
| Buick Garage – Meadville |
Pennhurst State School |
| Buick Manufacturing Division – Philadelphia |
Pennhurst State School – Spring City |
| Buick Motor Division – Philadelphia |
Pennhurst State School Spring City |
| Builders Supply Co. Wilkes Barre |
Pennrico. – Karn City |
| Building 52, Norristown State Hospital Norristown |
Penns Park – Bucks County |
| Buler Colliery – Pittston |
Penns Valley Insulation Co. Lester |
| Bulletin Building – Philadelphia |
Pennsalt Chemical Co. King of Prussia |
| Bundy Tubing – Coaldale |
Pennsalt Chemical Co. Philadelphia |
| Bundy Tubing Co. – Hometown |
Pennsalt Chemical Co. Wyndmoor Philadelphia |
| Bundy Tubing Coaldale |
Pennsalt Chemicals Corp. – Kimberton |
| Buono Bakery – Chester |
Pennsboro Mfg. Economy Industries |
| Bureau of Mines – Dept. of Interior Bruceton |
Pennsbury Pottery Co. Harrisville |
| Bureau Of Mines Building – Pittsburgh |
Pennsbury Pottery Co. Morrisville |
| Bureau of Mines Dept. of Interior Bruceton |
Pennsbury Pottery Co. Morrisville |
| Bureau of Mines South Park |
PennsValley High School – Spring Mills |
| Bureau Of Mines, Experimental Station – Pittsburgh |
Pennsylavania Coal Co. Pittston |
| Bureau Of Water Department Of Parks & Public Property – Reading |
Pennsylvaina Electric – Johnstown |
| Bures Motor Sales – Freeport |
Pennsylvania – Dept. of Public Instruction |
| Burger King – Phillipsburg |
Pennsylvania Academy of The Fine Arts – Philadelphia |
| Burke rsons & Bowlby – Dubois |
Pennsylvania Bolt & Nut Co. – Lebanon |
| Burkey Mills, Inc. Hamburg |
Pennsylvania Brake Beam Co. – Danville |
| Burle Industries, Inc. – Lancaster |
Pennsylvania Cement Co. – Bath |
| Burnham Boiler Co. Lancaster |
Pennsylvania Central Power Transit Williamsburg |
| Burrell Construction – New Kensington |
Pennsylvania Central Railroad – Philadelphia |
| Burroughs Corp. – Paoli |
Pennsylvania Central Railroad, 30th St. Station Philadelphia |
| Bustleton Elementary – Philadelphia |
Pennsylvania Chocolate Co. – Pittsburgh |
| Busx Corp – Pittsburgh |
Pennsylvania Co. Conway |
| Butler & New Castle Railway Co. |
Pennsylvania Co. Conway |
| Butler Auto Auction – Butler |
Pennsylvania Co. Lines of Pittsburgh Allegheny |
| Butler Bridge – Butler |
Pennsylvania Co. Pittsburgh |
| Butler Colliery Pittston |
Pennsylvania Coal & Coke Co. – Ehrenfeld |
| Butler County Memorial Hospital – Butler |
Pennsylvania Coal Co. #8 Washery Pittston |
| Butler County Mushroom Farm – Butler |
Pennsylvania Coal Co. Avoca |
| Butler Disposal Plant – Butler |
Pennsylvania Coal Co. Dunamere |
| Butler Health System – Butler |
Pennsylvania Coal Co. Dunmore |
| Butler High School – Butler |
Pennsylvania Coal Co. Dunnon |
| Butler Library – Butler |
Pennsylvania Coal Co. Ewen Breaker Pittston |
| Butler Light, Heat & Motor Co. – Butler |
Pennsylvania Coal Co. Mt. Lookout |
| Butler Light, Heat & Power Co. – Butler |
Pennsylvania Coal Co. Old Forge Breaker Dunmore |
| Butler Manufacturer – Providence |
Pennsylvania Coal Co. Pittston |
| Butler Memorial Hospital – Butler |
Pennsylvania Coal Co. Plains Junction |
| Butler Sewage Plant – Butler |
Pennsylvania Coal Co. Scranton |
| Butler State Memorial Hospital – Butler |
Pennsylvania Coal Co. Sebastopol |
| Butler Street Factory – Butler |
Pennsylvania Coal Co. Wyoming |
| Butler Township – Butler |
Pennsylvania Cola Co. Dunmore |
| Butler Works – Butler |
Pennsylvania Conrail Railroad Locomotive |
| Byberry Farms – Somerton |
Pennsylvania Department of Public Indiana |
| Byberry State Mental Hospital – Philadelphia |
Pennsylvania Electric Co. – Pine Grove |
| C & C Auto Parks – Cochranville |
Pennsylvania Electric Co. Altoona |
| C & D Battery – Connellsville |
Pennsylvania Electric Co. Chester |
| C. A. Spalding – Philadelphia |
Pennsylvania Electric Co. Conemaugh New Florence |
| C. B. Comstock Pittsburgh |
Pennsylvania Electric Co. Erie Plant Erie |
| C. C. & E. P. Townsend Co. New Brighton |
Pennsylvania Electric Co. Front St. Power Station Erie |
| C. C. & E.P. Townsend Co. – Fallston |
Pennsylvania Electric Co. Homer City Generating Station Homer City |
| C. C. Harrison Building – Philadelphia |
Pennsylvania Electric Co. Johnstown |
| C. C. Knight & Co. Building – Philadelphia |
Pennsylvania Electric Co. Keystone Generating Station |
| C. D Battery Pennsburg |
Pennsylvania Electric Co. Power Plant |
| C. E. Monday & Co. – Philadelphia |
Pennsylvania Electric Co. Seward Generating Station Seward |
| C. F Refractories Port Kennedy |
Pennsylvania Electric Co. Seward Plant – Indiana |
| C. F. Luppold – Leesport |
Pennsylvania Electric Co. Seward Plant Indiana County |
| C. F. Simonins & Sons – Philadelphia |
Pennsylvania Electric Co. Seward Station Seward |
| C. G. Hussey & Co. – Leetsdale |
Pennsylvania Electric Co. Shawville Generating Station Units 3 4 Shawville |
| C. H. Bradley & Co. – Pittsburgh |
Pennsylvania Electric Co. Steam Heat Dept Front St Station Erie |
| C. H. Co. Rowland |
Pennsylvania Electric Co. Williamsburg |
| C. H. Geist Co. – Philadelphia |
Pennsylvania Electric Keystone Generating Station Plumcreek |
| C. H. Masland & Sons Carlisle |
Pennsylvania Electric New Florence |
| C. H. Maslin & Sons – Philadelphia |
Pennsylvania Electric Saxton |
| C. H. Musselman Co. – Biglerville |
Pennsylvania Electric Steel Co. – Latrobe |
| C. H. Rowland – Philipsburg |
Pennsylvania Forge Corp. – Tacony |
| C. H. Wheller Manufacturing. Co. – Philadelphia |
Pennsylvania Fruit – Philadelphia |
| C. Howard Mercy State Hospital – Pittsburgh |
Pennsylvania Furnace Co. – Sheridan |
| C. L. Miller Co. – Scottsdale |
Pennsylvania Gas & Water Co. – Wilkes Barre |
| C. M. Marks Inc. Coraopolis |
Pennsylvania Gas Co. – Erie |
| C. R. Bairch & Co. – Emporium |
Pennsylvania Gas Co. Roystone |
| C. Schmidt & Sons Brewing Co. – Philadelphia |
Pennsylvania Gas Coal Co. – Irwin |
| C. V. Comstock |
Pennsylvania Gas Water Co. |
| C. V. Comstock – Pittsburgh |
Pennsylvania General Electric Co. – Pittsburgh |
| Cabot Corp. South Boyertown |
Pennsylvania General Imp. Co. – Philadelphia |
| Calabro Tires – Bridgeville |
Pennsylvania General Imp. Co. Rockledge |
| Caledonian Dye Works |
Pennsylvania Glass-Sand Corp. |
| Caledonian Dye Works – Philadelphia |
Pennsylvania Hardware Co. Reading |
| Calgon – Ellwood City |
Pennsylvania Hospital – Philadelphia |
| Calgon – Robinson Township |
Pennsylvania Hospital – Pittsburgh |
| California University of Pennsylvania – California |
Pennsylvania Industrial Chemical Co. Chester Plant Chester |
| Callery Chemical Co. – Callery |
Pennsylvania Industrial Chemical Co. Clairton Plant Storeroom Clairton |
| Calls Plaza Grocery Store – New Castle |
Pennsylvania Industrial Chemical Co. Gate 1 Chester |
| Caloric Appliance Corp. – Topton |
Pennsylvania Industrial Chemical Co. Jefferson Plant Elizabeth |
| Caloric Corp. Topton |
Pennsylvania Industrial Chemical Corp. Picco. – Clairton |
| Calumet Lubricants Co. – Rouseville |
Pennsylvania Institute for Instruction of Blind – Overbrook |
| Cambria Apa 36 – Philadelphia |
Pennsylvania Institute for The Instruction Of The Blind – Philadelphia |
| Cambria County Home – Johnstown |
Pennsylvania Iron Co. – Lancaster |
| Cambria Indiana Railroad – Colver |
Pennsylvania Lake Erie Dock Co. |
| Cambria Indiana Railroad – Johnstown |
Pennsylvania Laurelton State Village Laurelton |
| Cambria Iron Co. – Johnstown |
Pennsylvania Light & Power Co. Allegheny |
| Cambria Leasing Corp. – Johnstown |
Pennsylvania Light, Heat & Power Co. Allegheny |
| Cambria Library Association – Johnstown |
Pennsylvania Lightweight Aggregate – Bangor |
| Cambria Plant – Johnstown |
Pennsylvania Lightweight Aggregate Bangor |
| Cambria Steel Co. – Johnstown |
Pennsylvania Lines, of Pittsburgh |
| Cambria Steel Co. Marianna |
Pennsylvania Lubricating Co. – Pittsburgh |
| Cambria Steel Co. Office Building Johnstown |
Pennsylvania Mahoning Valley Railway Co. |
| Cambria Steel Co. Philadelphia |
Pennsylvania Malleable Co. – McKees Rocks |
| Camden Copper Works – Philadelphia |
Pennsylvania Malleable Co. Pittsburgh |
| Camden Fibre Mills – Philadelphia |
Pennsylvania Manufacturing Light & Power Co. Philadelphia |
| Cameron Colliery – Shamokin |
Pennsylvania Mutual Building – Philadelphia |
| Cametoo Co. – Pittsburgh |
Pennsylvania Mutual Insurance Co. – Philadelphia |
| Campbell Soup Co. – Philadelphia |
Pennsylvania Ordnance – Allenwood |
| Campbell Soup Co. Fourth Floor Rear Philadelphia |
Pennsylvania Ordnance Works – Allentown |
| Can Do Industries Park – Hazleton |
Pennsylvania Ordnance Works Ordnance Works Allentown |
| Can- Tex Industries, Inc. Frugality |
Pennsylvania Penitentiary Dept. of Justice Prison Site Graterford |
| Canadian Westinghouse Ltd – Waltz Mills – Ruffs Dale |
Pennsylvania Perlite Corp. Manufacturing Plant Bethlehem |
| Canning Factory – Somerset |
Pennsylvania Pilot Plant Lock Haven |
| Cannon Boiler Works, Inc. – New Kensington |
Pennsylvania Piping – Pittsburgh |
| Cannonsburg Iron & Steel Co. – Pittsburgh |
Pennsylvania Power & Light Co. Allentown |
| Cannonsburg Iron & Steel Co. Canonsburg |
Pennsylvania Power & Light Co. Bruce Mansfield Plant Shippingport |
| Canonsberg Iron & Steel Co. – Pittsburgh |
Pennsylvania Power & Light Co. Brunner Island Plant Unit #2-3 York Haven |
| Canonsburg General Hospital – Canonsburg |
Pennsylvania Power & Light Co. Cedar Steam Electric Station – Harrisburg |
| Canonsburg Iron & Steel Co. – Canonsburg |
Pennsylvania Power & Light Co. Generation Stores Lancaster |
| Canonsburg Terrace Apartments – Canonsburg |
Pennsylvania Power & Light Co. Hauto Steam Electric Station |
| Can-Tex Industries, Inc. – Frugality |
Pennsylvania Power & Light Co. Hauto Steam Electric Station |
| Cantile Building Allegheny City |
Pennsylvania Power & Light Co. Holtwood |
| Capital Products – Harrisburg |
Pennsylvania Power & Light Co. Lancaster County |
| Capital Products Co. Harrisburg |
Pennsylvania Power & Light Co. Lancaster |
| Capitol Products Co. – Mechanicsburg |
Pennsylvania Power & Light Co. Martins Creek |
| Car Mar Welding Service Berwick |
Pennsylvania Power & Light Co. Montour Station Unit #1-2 Washingtonville |
| Carain Co. – Somerset |
Pennsylvania Power & Light Co. Montour |
| Carbide Graphite Group, Inc. – Saint Marys |
Pennsylvania Power & Light Co. Pine Grove |
| Carbon Co. St. Mary S |
Pennsylvania Power & Light Co. Power Plant Storeroom Shamokin Dam |
| Carbon Limestone – Hillsville |
Pennsylvania Power & Light Co. Power Plant Storeroom Snyder City |
| Carbon Malleable Co. – Lancaster |
Pennsylvania Power & Light Co. Power Plant Storeroom Snyder City |
| Carbon Steel Co. – Pittsburgh |
Pennsylvania Power & Light Co. River Station |
| Carbon Transit Co. – Mauch Chunk |
Pennsylvania Power & Light Co. Scranton |
| Carbondale High School – Carbondale |
Pennsylvania Power & Light Co. Service Depot Lancaster |
| Carbondale Machine Co. – Carbondale |
Pennsylvania Power & Light Co. Ses Station Martins Creek |
| Carborundum Co. Latrobe |
Pennsylvania Power & Light Co. Shamokin Dam |
| Carey Brothers Wall Paper Manufacturing Co. – Philadelphia |
Pennsylvania Power & Light Co. Strawberry Ridge |
| Carey Furnace – Rankin |
Pennsylvania Power & Light Co. Suburban Plant Storeroom Scranton |
| Carey Manufacturing – Plymouth Meeting |
Pennsylvania Power & Light Co. Sunbury Steam Station |
| Carilise Tire & Rubber Co. – Carlisle |
Pennsylvania Power & Light Co. Sunbury |
| Carl P. Sheaffer Plumbing Mechanicsburg |
Pennsylvania Power & Light Co. Turbine Harrisburg |
| Carlin William Steam Boilers – Jeannette |
Pennsylvania Power & Light Co. Turbine Pittsburgh |
| Carlisle Gas & Water Co. – Carlisle |
Pennsylvania Power & Light Co. Washingtonville |
| Carlisle Hotel Pressed Wheel Co. Middleton Township |
Pennsylvania Power & Light Co. York Haven |
| Carlson Manufacturing Co. – Carnegie |
Pennsylvania Power & Light Martins Creek Power Plant Martins Creek |
| Carnegie Aluminum Door Window Carnage |
Pennsylvania Power & Light New Castle Plant Pittsburgh |
| Carnegie Brothers & Co. Limited – Pittsburgh |
Pennsylvania Power & Light Power Plant Storeroom Shamokin Dam |
| Carnegie Homestead Steel Works Munhall |
Pennsylvania Power & Light Power Plant Storeroom Snyder City |
| Carnegie Illinois Steel Corp. Allegheny City |
Pennsylvania Power & Light Suburban Plant Storeroom Scranton |
| Carnegie Illinois Steel Corp. Clairton |
Pennsylvania Power & Light, Turbine – Pittsburgh |
| Carnegie Illinois Steel Corp. Dravosburg |
Pennsylvania Power Co. – Ellwood City |
| Carnegie Illinois Steel Corp. Duquesne |
Pennsylvania Power Co. Cheswick Station – Cheswick |
| Carnegie Illinois Steel Corp. Etna |
Pennsylvania Power Co. Connellsville |
| Carnegie Illinois Steel Corp. Farrell |
Pennsylvania Power Co. Courtney |
| Carnegie Illinois Steel Corp. Irving |
Pennsylvania Power Co. Ellwood City |
| Carnegie Illinois Steel Corp. Pencoyd |
Pennsylvania Power Co. Monongahela |
| Carnegie Illinois Steel Corp. Pittsburgh |
Pennsylvania Power Co. New Castle |
| Carnegie Inst. of Tech. Morewood Gardens A-D Towers Pittsburgh |
Pennsylvania Power Co. Shippingport |
| Carnegie Institute of Technology – Pittsburgh |
Pennsylvania Power Co. Springdale |
| Carnegie Institute of Technology, Hameraschlag Hall – Pittsburgh |
Pennsylvania Power Light – Martins Creek |
| Carnegie Library – Munhall |
Pennsylvania Power Light Allentown |
| Carnegie Library – Oakland |
Pennsylvania Power Light Brunners Island |
| Carnegie Library Extension – Pittsburgh |
Pennsylvania Power Light Holtwood Station |
| Carnegie Library Munhall |
Pennsylvania Power MItchell Plant Courtney |
| Carnegie Mellon University – Pittsburgh |
Pennsylvania Power Pittsburgh |
| Carnegie Natural Gas Co. – Pittsburgh |
Pennsylvania Pulp & Paper Co. – Lock Haven |
| Carnegie Phipps & Co. Limited – Munhall |
Pennsylvania Pump & Compressor Co. |
| Carnegie Phipps & Co. Limited Pittsburgh |
Pennsylvania Railroad Broad St. Station Philadelphia |
| Carnegie Sheet Co. Pittsburgh |
Pennsylvania Railroad Co. 28Th St. Powerhouse Pittsburgh |
| Carnegie Steel Co. Allegheny |
Pennsylvania Railroad Co. Altoona |
| Carnegie Steel Co. Bessemer |
Pennsylvania Railroad Co. Blairsville |
| Carnegie Steel Co. Clairton |
Pennsylvania Railroad Co. Car Shops Altoona |
| Carnegie Steel Co. Cochran Station |
Pennsylvania Railroad Co. Chambersburg |
| Carnegie Steel Co. Duquesne |
Pennsylvania Railroad Co. Chester |
| Carnegie Steel Co. Farrell |
Pennsylvania Railroad Co. Conway |
| Carnegie Steel Co. Munhall |
Pennsylvania Railroad Co. Enola |
| Carnegie Steel Co. New Castle |
Pennsylvania Railroad Co. Erie |
| Carnegie Steel Co. Pittsburgh |
Pennsylvania Railroad Co. Foundries Altoona |
| Carnegie Steel Co. Rankin |
Pennsylvania Railroad Co. Hollidaysburg |
| Carnegie Steel Co. Sharon |
Pennsylvania Railroad Co. Juanita |
| Carnegie Steel Co. South Duquesne |
Pennsylvania Railroad Co. Lawrence Junction |
| Carnegie Steel Co. Works Munhall |
Pennsylvania Railroad Co. Media |
| Carnegie Steel Duquesne |
Pennsylvania Railroad Co. New Castle |
| Carnegie Tech – Carnegie |
Pennsylvania Railroad Co. Paoli |
| Carnegie Tech – McKees Rocks |
Pennsylvania Railroad Co. Philadelphia |
| Carnegie Technical School – Pittsburgh |
Pennsylvania Railroad Co. Pitcairn |
| Carnegie Tube Co. – Carnegie |
Pennsylvania Railroad Co. Pittsburgh |
| Carnegie-Illinois Steel Corp. – Irwin |
Pennsylvania Railroad Co. Pottsville |
| Carnegie-Illinois Steel Corp. – Pittsburgh |
Pennsylvania Railroad Co. Reading |
| Carnegie-Illinois Steel Corp. – Rankin |
Pennsylvania Railroad Co. Renovo |
| Carpenter Steel Co. – Reading |
Pennsylvania Railroad Co. Repair Shop |
| Carpenter Technology Corp. Reading |
Pennsylvania Railroad Co. Ronovo |
| Carpenters Local 2850 – Philadelphia |
Pennsylvania Railroad Co. Shire Oaks |
| Carpenters Union – Local 1462 – Philadelphia |
Pennsylvania Railroad Co. South Altoona |
| Carrie Furnace Co. – Pittsburgh |
Pennsylvania Railroad Co. St. Altoona |
| Carrie Furnace Co. Rankin |
Pennsylvania Railroad Co. Station 1560 Juniata Shop Altoona |
| Carrie Furnace Irvin |
Pennsylvania Railroad Co. Steam Heating Plant Philadelphia |
| Carrier Corp. Green Tree |
Pennsylvania Railroad Co. Three Mile Island Nuclear Power Plant |
| Carson Industrial Development Corp. – Pittsburgh |
Pennsylvania Railroad Freight Station Harrisburg |
| Cartech Corp. – Reading |
Pennsylvania Railroad Meadows Shops |
| Cascade Coal & Coke Co. – Sykesville |
Pennsylvania Railroad Office – Philadelphia |
| Cascade Coal & Coke Co. Tyler |
Pennsylvania Railroad Repair Shop Hollidaysburg |
| Case Erie Supply Corp. – Erie |
Pennsylvania Railroad Shops – Philadelphia |
| Cash & Carry Lumber Co. – Derry |
Pennsylvania Railroad Shops – Renovo |
| Castanea Mill Lock Haven |
Pennsylvania Railroad Station Pittsburgh |
| Castanea Paper Co. – Johnsonburg |
Pennsylvania Railroad Three Mile Island Nuclear Power Plant – Harrisburg |
| Castle Brand Meats New Castle |
Pennsylvania Railway Co. – Lawrence Junction |
| Castle Co. Shannon |
Pennsylvania Range Boiler – Philadelphia |
| Castle Rubber Co. – Butler |
Pennsylvania Reading- Conrail Railroad Roundhouse |
| Castle Village Shopping Center – Whitehall |
Pennsylvania Reading Seashore Lines – Conrail Railroad Cars |
| Catalytic Construction Co. Philadelphia |
Pennsylvania Reading Seashore Lines Camden |
| Catalytic, Inc. – Philadelphia |
Pennsylvania Refining Co. Building 38- 31 Karns City |
| Catasauqua Manufacturing Co. – Catasauqua |
Pennsylvania Rubber Co. Erie |
| Caterpillar Tractor Co. – E. York |
Pennsylvania Rubber Co. Erie |
| Caterpillar Tractor Co. Building B York |
Pennsylvania Rubber Co. Jeanette |
| Caterpillar Tractor Co. Memory Lance York |
Pennsylvania Rubber Co. Jeannette |
| Caterpillar Tractor Co. York |
Pennsylvania Salight Manufacturing Co. Natrona |
| Catholic Diocese – Greensburg |
Pennsylvania Salk Manufacturing Co. – Natrona Heights |
| Catholic Parish Carlisle Pike Camp Hill |
Pennsylvania Salt Manufacturing Co. Natrona |
| Cebor Construction Corp. Pittsburgh |
Pennsylvania Salt Mill |
| Ceco Mifflin |
Pennsylvania Smelting & Refining Co. – Philadelphia |
| Ceco North Side |
Pennsylvania Smelting Refining Co. Philadelphia |
| Cedar Cliff Silk Co. – Chambersburg |
Pennsylvania State Corrections Institution- Dining Hall – Cambridge Springs |
| Cedar Steam Electric Station Harrisburg |
Pennsylvania State Hospital For Tuberculosis – Hamburg |
| Cederbrook Hills Apartments – Cedarbrook Hills |
Pennsylvania State Park – Pittsburgh |
| Celotex Corp. – Philadelphia |
Pennsylvania State Park – Racoon State Park – Pittsburgh |
| Cenco Construction Inc. Philipsburg |
Pennsylvania State Park Pittsburgh |
| Center Crest Home – Bellefonte |
Pennsylvania State Penitentiary Dept. of Justice Prison Site Graterford |
| Center Township Authority – Center Township |
Pennsylvania State Reform School – Morganza |
| Central Administration Area- Selinsgrove Center – Selinsgrove |
Pennsylvania State Training School – Morganza |
| Central Blood Bank – Oakland |
Pennsylvania State University – Star Junction |
| Central Boilers Dept End Yard Steelton |
Pennsylvania State University Engineering Research State College |
| Central Building – New Castle |
Pennsylvania Steel Chester |
| Central Catholic High School – Allentown |
Pennsylvania Steel Co. Coke Ovens Steelton |
| Central Cement Co. – Colplay |
Pennsylvania Steel Co. Lebanon Furnace Lebanon |
| Central Dist. & Printing Tel Co. – Pittsburgh |
Pennsylvania Steel Co. Lebanon |
| Central District & Printing Telegraph Co. – Pittsburgh |
Pennsylvania Steel Co. Philadelphia |
| Central Garage – Titusville |
Pennsylvania Steel Co. Steelton |
| Central Gas & Electric – Middletown |
Pennsylvania Steel Mill Chester |
| Central High School – Philadelphia |
Pennsylvania Sugar Co. Philadelphia |
| Central High School Ogontz & Olney Avenues – Philadelphia |
Pennsylvania Sugar Division, Philadelphia |
| Central Iron & Steel Co. – Harrisburg |
Pennsylvania Traction Co. – Butler |
| Central Land Co. – Pittsburgh |
Pennsylvania Training School Morganza |
| Central New Jersey Railroad – Bethlehem |
Pennsylvania Tube Co. – Pittsburgh |
| Central Poor District of Luzerne Co. – Wilkes Barre |
Pennsylvania Turnpike – Harrisburg |
| Central Poor District of Luzerne County – Retreat |
Pennsylvania Turnpike Admin – Highspire |
| Central Power Plant – Pittsburgh |
Pennsylvania Turnpike Harrisburg |
| Central Railroad Electric Light Plant Ashley |
Pennsylvania Utilities Co. – Easton |
| Central Railroad Of New Jersey – Ashley |
Pennsylvania Utilities Investment Corp. – Scranton |
| Central Railroad of New Jersey Ashley |
Pennsylvania Water & Power Co. – Holtwood |
| Central Works – Lebanon |
Pennsylvania Water Co. – Nadine |
| Centralia Colliery – Centrailia |
Pennsylvania Water Co. Wildwood |
| Centre Community Hospital – State College |
Pennsylvania Water Co. Wilkinsburg |
| Century Iii Mall – Mifflin |
Pennsylvania, Commonwealth Slippery Rock |
| Certain Teed Production Corp. – York |
Pennsylvnia Co. Pittsburgh |
| Certainteed – Mountain Top |
Penntech Papers Inc. Johnsonburg |
| Certainteed Boiler House – Ambler |
Pennwalt Chemical Corp. Philadelphia |
| Certainteed Conshohocke |
Pennyslvania Central Railroad |
| Certainteed Corp. – Ambler |
Pennzoil Co. Plant 1 Rouseville |
| CertainTeed Corp. Valley Forge |
Pennzoil Co. Plant 2 Oil City |
| Certainteed Insulation – Industrial Park Mountain Top |
Pennzoil OIl Co. Oil City |
| Certainteed Plant – York |
Pennzoil OIl Co. Pittsburgh |
| Certain-Teed Production Corp. – York |
Pennzoil OIl Co. Rouseville |
| Certainteed Products Co. – Philadelphia |
Pennzoil Refinery Elizabeth |
| Certainteed Products Corp. York |
Pennzoil Refinery Oil City |
| Certainteed Valley Forge |
Pennzoil Refining – Rouseville |
| Chamber Of Commerce Building – Pittsburgh |
Pennzoil Refining Co. Plant # 1 Rouseville |
| Chamber Reduction Co. McKeesport |
Pennzoil Refining Plant 1 – Rouseville |
| Chamberlain Ammunition Depot Scranton |
Penreco-Pennsylvania Refining Co. Karns City |
| Chamberlain Coal Co. – Port Carbon |
Pens Valley Insulation – Lester |
| Chamberlain Coal Co. Pottsville |
Pensylvania Forge Corp. Tacony Philadelphia |
| Chamberlain Steel – Scranton |
Pensylvania Railroad Co. – Altoona |
| Chamberot Commerce Building – Pittsburgh |
Penzoil Co. Plant #4 – Houserville |
| Chambersburg Hospital – Chambersburg |
Penzoil Co. South Penn Oi Oil City |
| Chambersburg Market – Chambersburg |
Penzoil Refinery Oil City |
| Chambersburg Powerhouse – Chambersburg |
People Ice & Cold Storage Co. – McKeesport |
| Chambersburg Powerhouse Chambersburg |
People Natural Gas White Valley |
| Champion Construction Co. – Philadelphia |
People Traction Co. – Philadelphia |
| Champion Dish Washing Machine Co. Erie |
Peoples Bank – Wilkes Barre |
| Champion Valley Farm – Lime Ridge |
Peoples Bank Building – Pittsburgh |
| Channellock – Meadville |
Peoples Bank Wilkes Barre |
| Chanticlegr Condominiums – Pittsburgh |
Peoples Coal Co. Oxford Switch |
| Chapman – Lehigh County |
Peoples Coal Co. Scranton |
| Char. Wallace – New Castle |
Peoples Consolidated Service Corp. – Easton |
| Charleroi Brewing Co. – Charleroi |
Peoples Construction – Philadelphia |
| Charleroi Construction Co. – Pittsburgh |
Peoples Electric Light, Heat & Power Co. – Greensburg |
| Charleroi Methodist Church – Charleroi |
Peoples Ice & Cold Storage Co. McKeesport |
| Charleroi Plate Glass Co. – Pittsburgh |
Peoples Ice Light & Storage Co. McKeesport |
| Charleroi Water Co. – Charleroi |
Peoples Incandescent Light & Power Co. – Meadville |
| Charles A. Briggs Lumber & Manufacturing Co. – Scottsdale |
Peoples Land Co. – Pittsburgh |
| Charles Alter, Contractor Sharon |
Peoples Light Heat & Power Co. – Mahanoy City |
| Charles Cole Hospital – Coudersport |
Peoples Natural Gas – Brave |
| Charles D. Kaier Co. Limited – Mahanoy City |
Peoples Natural Gas Co. – Braceton |
| Charles E. Johnson & Co. – Philadelphia |
Peoples Natural Gas Co. Office Building Wilkinsburg |
| Charles E. Langcake – Philadelphia |
Peoples Power Co National Tube – Ellwood City |
| Charles E. Monday & Co. Philadelphia |
Peoples Power Co. Elwood City |
| Charles H. Boehm High School – Bucks County |
Peoples Savings & Trust Building – Pittsburgh |
| Charles H. Caspar for Class & Nachod Bwg. Co. Philadelphia |
Peoples Street Railway Co. – Nanticoke |
| Charles Lachman Co. Inc. – Phoenixville |
Peoples Street Railway Co. Alden |
| Charles Lenning & Co. Inc. – Philadelphia |
Peoples Street Railway Co. Wanamie |
| Charles Lenning, Tacony Chemical Works Philadelphia |
Pep Boys – Philadelphia |
| Charles Mccaul Co. – Philadelphia |
Pepperidge Farms – Downington |
| Charles St. Suppes – Johnstown |
Peps Boys – Robinson Township |
| Charles T. Schoen – Philadelphia |
Pepsi- Cola – McKees Rocks |
| Charles, Lachman Div Phoenixville |
Perkins & Co. Limited – Sharpsville |
| Charleytown – Sykesville |
Perlstein Glass Co. Richmond Street Philadelphia |
| Charlie Rupp – Indiana |
Permali Corp. – Mt. Pleasant |
| Charmi Tuntannock |
Perrex Aluminum Wellsville |
| Charmin Paper Co – Mechoopany Mill – Tunkhannock |
Perry Iron Co. – Erie |
| Charmin Paper Co. – Meshoppen |
Perry Lower Tyrone School Fayette County |
| Charmin Paper Co. – Scranton |
Perry Ship Builders Company Erie |
| Charmin Paper Co. Outdoor Tank Scranton |
Pes Valley Insulation Co. Lester |
| Charmin Paper Mill – Mahoopeny |
Peter F. Loftus – Pittsburgh |
| Charmin Paper Products Co. – Kelogpany |
Peter Paul Cadbury Yalmont Ind Park – Hazleton |
| Charmin Paper Products Co. Mehoopany Station |
Peter Township Sewage Plant – Peter Township |
| Charmin Paper Rod Co. Mehoopany |
Peters & Co. – McKeesport |
| Charter Plastics – Titusville |
Peters Packing Co. – McKeesport |
| Chartier Valley High School – Pittsburgh |
Peters Township High School – Peters Township |
| Chartiers Shopping Center – Collier Township |
Peters Township Jr. High School – Peters Township |
| Chartiers Valley High School – Pittsburgh |
Petroleum Ironworks – Sharon |
| Chartiers Valley School District – Pittsburgh |
Petroleum Reclamation Co. – Bradford |
| Chas St Suppes – Johnstown |
Petrowax – Emlenton |
| Chas. E Langcake – Philadelphia |
Petrowax Farmers Valley |
| Chas. E. Johnson & Co. – Philadelphia |
Pfizer Inc. – Easton |
| Chas. E. Monday & Co. – Philadelphia |
Pgh Transformer – Canonsburg |
| Chas. H. Caspar for Class & Nachod Bwg. Co. – Philadelphia |
PgH. Coke & Chemical Neville Island |
| Chas. T. Schoen – Philadelphia |
Pgw Torresdale Philadelphia |
| Chatham Center – Pittsburgh |
Phiadelphia Exposition – Philadelphia |
| Chelsy Products- Oakmont |
Phil Ellena & Chew Sts. – Philadelphia |
| Chelten Supply House – Philadelphia |
Philada & Reading Railway – Philadelphia |
| Cheltenham High School – Cheltenham Township |
Philada Rapid Transit Co. – Philadelphia |
| Cheltenham Township |
Philadelphia & Bristol Water Co. – Holmesburg |
| Chem- Clay Corp. Carnegie |
Philadelphia & Reading Coal & Iron Co. Frackville |
| Chem- Clay Corp. Pittsburgh |
Philadelphia & Reading Coal & Iron Co. Good Spring |
| Chem-Clay Corp. – Carnegie |
Philadelphia & Reading Coal & Iron Co. Locust Gap |
| Chem-Clay Corp. – Pittsburgh |
Philadelphia & Reading Coal & Iron Co. Mahanoy Plane |
| Chemical Concentrates – Forrest Hills |
Philadelphia & Reading Coal & Iron Co. Minersville |
| Chemical Concentrates Fort Washington |
Philadelphia & Reading Coal & Iron Co. Mt Carmel |
| Chemical Division Oil City Plant Oil City |
Philadelphia & Reading Coal & Iron Co. Philadelphia |
| Chemical Division Penacol Plant Petrolia |
Philadelphia & Reading Coal & Iron Co. Pottsville |
| Chemical Pilot Plant Lock Haven |
Philadelphia & Reading Coal & Iron Co. Reading |
| Chemical Plant Receiving Station 1 Philadelphia |
Philadelphia & Reading Coal & Iron Co. Schuykill Haven |
| Cherion & Radnor Gas & Electric Co. Wayne |
Philadelphia & Reading Coal & Iron Co. St. Nicholas |
| Cherokee Plant Research Building Nbr 108 Danville |
Philadelphia & Reading Railway – Frackville |
| Cherry River Paper Co. Philadelphia |
Philadelphia & Reading Railway – Philadelphia |
| Cherry Service Station – Leechburg |
Philadelphia & Reading Subway – Philadelphia |
| Chester Chemical – Chester |
Philadelphia Aquatic Club – Philadelphia |
| Chester City – Valley Forge |
Philadelphia Asbestos Cork. Philadelphia |
| Chester High School – Chester |
Philadelphia Bank Building – Philadelphia |
| Chester Improvement Co. – Thurlow |
Philadelphia Board of Education – Philadelphia |
| Chester Lace Co. – Chester |
Philadelphia Brewing Co. – Philadelphia |
| Chester Laundry – Chester |
Philadelphia Burner Serv – Philadelphia |
| Chester Paper Co. – Chester |
Philadelphia City Hall – Philadelphia |
| Chester Processing Co. – Chester |
Philadelphia City Hall Annex – Philadelphia |
| Chester Processing Co. Chester |
Philadelphia City High School Philadelphia |
| Chester University – Chester |
Philadelphia Co. – Canonsburg |
| Chester, Kennett & Wilmington Electric Railway Co. – Kettett Square |
Philadelphia Co. Of Pittsburg – Pittsburgh |
| Chestnut Hill Academy – Chestnut Hill |
Philadelphia Coke Co. – Philadelphia |
| Chestnut Hill Hospital – Philadelphia |
Philadelphia College Of Pharmacy – Philadelphia |
| Cheswick Generating Station Power Plant – Springdale |
Philadelphia Convention Hall – Philadelphia |
| Cheswick Power Station – Springdale |
Philadelphia County Prison – Holmesburg |
| Cheswick Power Station Cheswick |
Philadelphia County Prison Moyamensing |
| Chevron Asphalt Co. Springdale |
Philadelphia County Prison Philadelphia |
| Chevron Oil Refinery |
Philadelphia Dry Y- Philadelphia |
| Chevron Oil Refinery – Philadelphia |
Philadelphia Dye Works – Philadelphia |
| Chevron Refinery & Atlantic Refinery |
Philadelphia Electric – Bridgeport |
| Chevron Refinery & Atlantic Refinery – Philadelphia |
Philadelphia Electric Bristol Township |
| Chew-Bittel Co. – Doylestown |
Philadelphia Electric Brunner Island York Haven |
| Cheyney State University – Cheyney |
Philadelphia Electric Co, Cromby Plant |
| Chicago & St. Louis Railroad |
Philadelphia Electric Co. – Barbados Island |
| Chicago B & I. Bell – Scranton |
Philadelphia Electric Co. 9Th Willow Streets Philadelphia |
| Chicago Bridge & Iron Co. – Greensburg |
Philadelphia Electric Co. Barbados Island |
| Chicago Pneumatic Tool Co. – Franklin |
Philadelphia Electric Co. Barbados Station Norriton |
| Chicago Pneumatic Tool Co. Pittsburgh |
Philadelphia Electric Co. Chester Generating Station Chester |
| Chickies Iron Co. – Chickies |
Philadelphia Electric Co. Conowingo |
| Chilcoat – Castle Shannon |
Philadelphia Electric Co. Conshohocken |
| Childers Products – Bristol |
Philadelphia Electric Co. Cromby Generating Station Phoenixville |
| Childrens & Senior Home – New Brighton |
Philadelphia Electric Co. Cromby Plant Cromby |
| Childrens Homeopathic Hospital – Philadelphia |
Philadelphia Electric Co. Cromby Station E. Pikeland Township |
| Childrens Hospital – Ebensburg |
Philadelphia Electric Co. Cromby Station Philadelphia |
| Childrens Hospital – Philadelphia |
Philadelphia Electric Co. Delaware Station |
| Children’s Reception Welfare – Philadelphia |
Philadelphia Electric Co. Eddystone 1 Philadelphia |
| Childrens Reception Welfare Philadelphia |
Philadelphia Electric Co. Eddystone Generating Station Eddystone |
| Childrens Senior Home – New Brighton |
Philadelphia Electric Co. Oil Facility Philadelphia |
| Chilled Roll Foundry – Vandergrift |
Philadelphia Electric Co. Peach Bottom |
| Chipman Knitting Co. – Easton |
Philadelphia Electric Co. Peco Building |
| Chippewa Sewage Plant Chippewa |
Philadelphia Electric Co. Philadelphia |
| Chiz Bros Co. Munhall |
Philadelphia Electric Co. Richmond |
| Chiz Brothers, Inc. – Elizabeth |
Philadelphia Electric Co. Schuylkill Generating Station Philadelphia |
| Chocura – Philadelphia |
Philadelphia Electric Co. Southwark |
| Christ Evangelical Ref. Chuch – Harristown |
Philadelphia Electric Co. Station C Philadelphia |
| Christ M E Church – Pittsburgh |
Philadelphia Electric Co. Tacony |
| Christ M.E. Church – Pittsburgh |
Philadelphia Electric Delta |
| Christian Street Schuylkill Station – Philadelphia |
Philadelphia Electric Falls Township |
| Christopher Mining Co. – Washington |
Philadelphia Electric Peachbottom Nuclear Delta |
| Chromatube Dunemore |
Philadelphia Electric Philadelphia |
| Chrysler Corp. New Castle |
Philadelphia Electric Phoenixville |
| Chrysler Corp. Perrysburg |
Philadelphia Electric Plant – Philadelphia |
| Chrysler Depot – Oakdale |
Philadelphia Electric Plant Barbados Island Philadelphia |
| Church – Johnstown |
Philadelphia Electric Pottstown |
| Church – Whitehall |
Philadelphia Electric Powerhouse – Philadelphia |
| Church of Christ – Baldwin |
Philadelphia Electric Richmond Philadelphia |
| Church Of The Holy Spirit – Palmyra |
Philadelphia Electric Sanatoga |
| Churchville Elementary School – Holland |
Philadelphia Electric Limerick Nuclear Power Plant – Limerick |
| Cia Panamona De Fuerzas Y Luz Panama City |
Philadelphia Engineering Co. – Philadelphia |
| Circle Heating Service Pittsburgh |
Philadelphia Exposition – Philadelphia |
| Citicorp Venture Capital – Latrobe |
Philadelphia Fire Department – Philadelphia |
| Cities Service Oil Co. – Philadelphia |
Philadelphia Fire Dept. – Philadelphia |
| Citizens Bank – Latrobe |
Philadelphia Forge Co. – Philadelphia |
| Citizens Electric Illuminating Co. – Pittston |
Philadelphia Forge Philadelphia |
| Citizens Electric Light & Power Co. – McDonald |
Philadelphia Gas & Electric – Philadelphia |
| Citizens Electric Light Co. – Braddock |
Philadelphia Gas Works Plant Philadelphia |
| Citizens Electric Light Heat & Power Co. – Lancaster |
Philadelphia Gas Works Station A & B Philadelphia |
| Citizens Electric Light, Heat & Power Co. – Lancaster |
Philadelphia Gear Works King of Prussia |
| Citizens General Hospital – New Kensington |
Philadelphia General Hospital – Philadelphia |
| Citizens Light Heat & Power Co. – Johnstown |
Philadelphia General Hospital Student Nurses Dormitory Philadelphia |
| Citizens Light, Heat & Power Co. – Johnstown |
Philadelphia Greyhound Terminal – Philadelphia |
| Citizens Water Co. – McDonald |
Philadelphia Group – Philadelphia |
| Citizens Water Supply Co. – Washington |
Philadelphia Home For Indigent & House Of Correction – Holmesburg |
| City Electric Light Co. Allegheny City |
Philadelphia Hospital For Insane – Philadelphia |
| City Hall & Courthouse – Easton |
Philadelphia Housing Authority – Philadelphia |
| City Mill – Philadelphia |
Philadelphia Incinerator – Philadelphia |
| City of Erie – Erie |
Philadelphia Inquirer Office Building Philadelphia |
| City Of Lancaster Dept. Of Water – Lancaster |
Philadelphia Institute for Feeble Minded Byberry |
| City Of Lancaster Pa Department of Water – Lancaster |
Philadelphia International Airport – Philadelphia |
| City of Lancaster – Department of Water |
Philadelphia Ironworks – Philadelphia |
| City Of Mckeesport Water Dept. – McKeesport |
Philadelphia Morton & Swarthmore Street Railway Folsom Station |
| City of Monessen – Monessen |
Philadelphia Museum – Philadelphia |
| City Of Philadelphia – Dept. Of Streets Sanitation – Philadelphia |
Philadelphia National Bank Philiadelphia |
| City Of Philadelphia – Yard & Garage Office Building – Philadelphia |
Philadelphia Naval Shipyard – Philadelphia |
| City Of Philadelphia Dept. Of Streets Sanitation – Philadelphia |
Philadelphia Naval Yard |
| City Of Philadelphia Yard & Garage Office Building – Philadelphia |
Philadelphia Navy Shipyard – Philadelphia |
| City of Pittsburgh 28Th Street Incinerator Plant Pittsburgh |
Philadelphia Piping & Equipment Co. – Bristol |
| City of Pittsburgh Asphalt Plant Pittsburgh |
Philadelphia Protectory For Boys – Phoenixville |
| City Of Pittsburgh Brilliant Pumping Station – Pittsburgh |
Philadelphia Psychiatric Hospital – Philadelphia |
| City Of Pittsburgh Department Of Charities – Marshalsea |
Philadelphia Public Library – Philadelphia |
| City Of Pittsburgh Mayview Plant – Pittsburgh |
Philadelphia Quartz Co. – Chester |
| Civic Arena |
Philadelphia Quartz Co. Philadelphia |
| Civic Arena – Pittsburgh |
Philadelphia Railroad Reading |
| Civic Center 34Th Street Philadelphia |
Philadelphia Rapid Transit Co. – Doylestown |
| Claire Furnace Co. – Sharpsville |
Philadelphia Reading Coal & Iron Co. Mahanoy Plane |
| Clairton By-Products Coke Works – Clairton |
Philadelphia Reading Corp. – Pottsville |
| Clairton Coke Coal Chemical Works Rubel Clairton |
Philadelphia Resin Co. – Philadelphia |
| Clairton Cooling Tower – Clairton |
Philadelphia Roll & Machine – Philadelphia |
| Clairton Courthouse Clairton |
Philadelphia Rubber Co. Works Co. Oaks |
| Clairton High School – Clairton |
Philadelphia Rust – Philadelphia |
| Clairton Municipal Clairton |
Philadelphia Rust Proof C Philadelphia |
| Clairton Power Station – Clairton |
Philadelphia Sc 10 Customer Pick Up Berwyn |
| Clairton Sewage Treatment Plant – Clairton |
Philadelphia School District – Philadelphia |
| Clairton Sportsmans Club – Clairton |
Philadelphia Ship Maintenance Philadelphia |
| Clairton Steel Co. – Clairton |
Philadelphia Shipyard Philadelphia |
| Clairton Steel Works & Furnaces – Clairton |
Philadelphia St Hospital – Philadelphia |
| Clairton Works Methyl Naptheline Division Clairton |
Philadelphia Steam Heating Co. – Philadelphia |
| Clairton Works Tar Distillation Plant Clairton |
Philadelphia Stockyards Philadelphia |
| Clarion County Home – Sligo |
Philadelphia Suburban – Chester |
| Clarion County Vo- Tech – Clarion |
Philadelphia Suburban Gas & Electric Co. – Jenkinstown |
| Clarion Glass Factory – Clarion |
Philadelphia Suburban Gas & Electric Co. Chester |
| Clarion Hospital – Clarion |
Philadelphia Suburban Water Co. – Bryn Mawr |
| Clarion Mall – Clarion |
Philadelphia Suburban Water Co. Crum Creek |
| Clarion Mills – Johnsonburg |
Philadelphia Suburban Water Co. Janney |
| Clarion Osteopathic Community Hospital – Clarion |
Philadelphia Suburban Water Co. Media |
| Clarion State College Field House – Clarion |
Philadelphia Tapestry Mills – Philadelphia |
| Clarion Steel Works – Pittsburgh |
Philadelphia Traction Co. – Philadelphia |
| Clarks Summit State Hospital – Clarks Summit |
Philadelphia Wool Scourin Philadelphia |
| Clarkson Chemical Co. – Williamsport |
Philadelphia Works – Philadelphia |
| Clay Mill Works – Clearfield |
Philadelphia Zoo – Philadelphia |
| Clay Mill Works No .3 Works Clearfield |
Philadelphila Traction Co. – Philadelphia |
| Clear Spring Coal Co. – Pittston |
Philadelpia Electric Co. – Philadelphia |
| Clear Spring Coal Co. Pittston |
Philadelpia Inquirer Garage – Philadelphia |
| Clearfield Bank – Philadelphia |
Philco – Blue Bell |
| Clearfield High School – Clearfield |
Philip Carey Manfuacturing Co. – Plymouth Meeting |
| Clearfield Hospital – Clearfield |
Philipsburg Junior High School – Philipsburg |
| Clearfield Steam Heating Co. – Clearfield |
Philipsburg Osceola School District – Philipsburg |
| Clearview Elementary School – Bethlehem |
Phillip Carey Manufacturing Co. – Philadelphia |
| Clearview Mall – Butler |
Phillip Carey Plymouth |
| Cleaver Brooks Boiler Plant – Lebanon |
Phillips Gas Co. – Craigsville |
| Cleaver Brooks Co. – Lebanon |
Phillips Generating Station South Heights |
| Cleaver Brooks Lebanon Downingtown |
Phillips Mine Co. |
| Cleaver- Brooks, Lebanon |
Phillips Petroleum Co. – Hanover |
| Clermont Engineering Co. I Philadelphia |
Phillips Power Station – Crescent Township |
| Clermont Engineering Philadelphia |
Philmond Association & Av Invs Huntingdon Valley |
| Cleveland Erie Co. – Elk Station |
Phodia, Inc. – Morrisville |
| Cleveland Worsted Mills Co. – Philadelphia |
Phoenix Cement Co. – Nazareth |
| Climax Molybdenum Co. Langeloth Burgettstown |
Phoenix Cement Co. Nazareth |
| Climax Steel – Burgettstown |
Phoenix Glass Co. – Monaca |
| Clinton G. Hodder – Pittsburgh |
Phoenix Glass Co. Pittsburgh |
| Clinton Iron & Steel Co. – Pittsburgh |
Phoenix Glass House – Monaca |
| Closure Plant – Lancaster |
Phoenix Glass Monaca |
| Closure Plant Building 13- D Plant Building Lancaster |
Phoenix Iron & Steel – Phoenixville |
| Co. Braeburn – Braeburn |
Phoenix Iron & Steel Co. – Chester |
| Coal & Coke By-Products Co. – Pittsburgh |
Phoenix Iron & Steel Co. Harrisburg |
| Coal Brooke Mine – Carbondale |
Phoenix Iron Co. – Phoenixville |
| Coal Cleaning Plant – Colver |
Phoenix Steel Corp. – Phoenixville |
| Coal Conversion Gasification Plant – Bruceton |
Phoenix Utility Co. – Hauto |
| Coal Conversion Gasification Plant – Homer City |
Phoenix Utility Co. Pine Grove |
| Coal Glen |
Phoenix Utility Co. Williamsport |
| Coal Hydrogenation Pilot Plant Verona |
Phoenixville Hospital – Phoenixville |
| Coal Mines – Indiana |
Phoenixville Incinerator – Phoenixville |
| Coal Plant – Vestaburg |
Phoenixville Steel – Phoenixville |
| Coal Preparation Plant – Hoststutler |
Physical Test Labs – Coatesville |
| Coalfax Power Station – Cheswick |
Physicians & Dentist Building – Philadelphia |
| Coatesville Rolling Mill Co. – Coatesville |
Picco Hercules Chemical – Clairton |
| Cochran Motors – Monroeville |
Picco. Hercules Chemical – Elizabeth |
| Cochran Nissan – Butler |
Pickard Joseph Sons Co. Philadelphia |
| Cochran Times Cochranton |
Pickett Middle School Wayne Chelten Philadelphia |
| Cochrane D & V Crane Corp. – Kimberton |
Pickles Steak House – Horsham |
| Codo Manufacturing Corp. Leetsdale |
Pico Chemical – Chester |
| Cogeneration Plant – Hazelton |
Pico Chemical Clairton |
| Cogeneration Plant – Williamsport |
Pierce Glass Co. The Port Allegany |
| CoInco – Cochranton |
Pieroe Glass Co. – Port Allegany |
| Coke – Philadelphia |
Pillsbury Plant – Greenville |
| Coke Boiler House – Bethlehem |
Pilot Plant – Pittsburgh |
| Coke Oven Division – Bethlehem |
Pilot Plant Division – Philadelphia |
| Coke Plant Johnstown |
Pilot Plant- Station 73 |
| Colbers Mine |
Pine Grove S.E. Station – Pine Grove |
| Cold Springs Bleachery – Yardley |
Pine High School – Pine Township |
| Cole Co. – Philadelphia |
Pine Knot Colliery – Minersville |
| Coleman Motors – Wilkinsburg |
Pine Ridge Stirling Boiler House – Hudson |
| Colfax Power Station – Springdale |
Pine Township Coal Co. – Heilwood |
| Coll Tire Recapping – Burgettstown |
Pipeline Service Co. – Glenwillard |
| College Park – Monroeville |
Piper Aircraft – Lock Haven |
| Collieries Supply & Equipment Co. – Philadelphia |
Piping Polystrene Plant Kobuta |
| Colliery #18 – Wanamie |
Pitt Com Heat Treat Pittsburgh |
| Colliery Morris |
Pitt Comm Heat Treating – Pittsburgh |
| Colliery Supply & Equipment – Philadelphia |
Pitt- Fab Pittsburgh |
| Colonial #1 Plant – Smock Station |
Pitt Steel Foundry Machine Co. McKeesport |
| Colonial Aluminum & Smelting Co. – Columbia |
Pitt-Fab – Pittsburgh |
| Colonial Berks Real Estate – Reading |
Pittron A Textron Co. Glassport |
| Colonial Coke Co. – Grindstone |
Pittron A Textron Co. Pittsburgh |
| Colonial Collieries Co. – Minersville |
Pittron Co. McKeesport |
| Colonial Collieries Co. Mt Carmel |
Pitts Coal Co. – Pittsburgh |
| Colonial Iron Co. – Riddlesburg |
Pitts. Coal Aspen M Miller – Pittsburgh |
| Colonial Metals Co. Columbia |
Pitts. Comm. Heating Pittsburgh |
| Colonial Steel Co. – Monaca |
Pittsburg Airport – Pittsburgh |
| Colonial Steel Co. Pittsburgh |
Pittsburg Coal Co. – Scott Haven |
| Colonial Steel Co. South Monaca |
Pittsburg Coke & Chemical Co. Neville Island |
| Colonial Steel, Division Vanadium Alloys Steel Co. Monaca |
Pittsburg McKeesport & Connellsville RR Pittsburgh |
| Colonial Supply Pittsburgh |
Pittsburg Metal Process – Sharpsburg |
| Colonial Trust Co. – Reading |
Pittsburg Pa Plant – Denbeau |
| Colt Industries Crucible, Inc. Midland |
Pittsburg Plate Glass Co. – Philadelphia |
| Colt Industries Pittsburgh |
Pittsburg Plate Glass Co. Pittsburgh |
| Colt Industries Stainless Steel Alloy Div. Midland |
Pittsburg Seamless Tube Co. – Beaver Falls |
| Columbia Boiler Co. of Pot Pottstown |
Pittsburg Shear Knife & Machine Co. Pittsburgh |
| Columbia Bridge Co. – Carnegie |
Pittsburg Steel Co. – Pittsburgh |
| Columbia County Courthouse – Bloomsburg |
Pittsburg Steel Foundry – Pittsburgh |
| Columbia Hospital – Wilkinsburg |
Pittsburgh & Birmingham Traction Co. – Pittsburgh |
| Columbia Metals Co. Columbia |
Pittsburgh & Butler Street Railway Co. – Renfrew |
| Columbia Plumbing Supply House – Philadelphia |
Pittsburgh & Butler Street Railway Co. Butler County |
| Columbia Rolling Mill Co. – Harrisburg |
Pittsburgh & Butler Street Railway Co. Renfrew |
| Columbia Rolling Mill Co. Watts |
Pittsburgh & Conneaut Dock Co. – Pittsburgh |
| Columbia Rolling Mill Co. Wrightsville |
Pittsburgh & End Passenger Railway Co. – Pittsburgh |
| Columbia Water Co. – Columbia |
Pittsburgh & Lake Erie Railroad – Glassport |
| Columbian Carbon Co. – Philadelphia |
Pittsburgh & Lake Erie Railroad Co. – Pittsburgh |
| Comanco Inc. Berwick |
Pittsburgh & Lake Erie Railroad Glassport |
| Combined Paper Mills Inc. Roaring Springs |
Pittsburgh & Virginia Railway Co. – Rook |
| Combustion Engineering, Inc. Metropolitan Edison Reading |
Pittsburgh & Westend Pars. Railway Co. – Pittsburgh |
| Combustion Engineering, Inc. Monongahela |
Pittsburgh Activated Carbon Co. Dept Pittsburgh |
| Combustion Engineering, Inc. Port Kennedy |
Pittsburgh Airport – Pittsburgh |
| Combustion Engineering, Inc. Scranton |
Pittsburgh Athletic Association Land Co. Pittsburgh |
| Combustion Equipment Service Oreland |
Pittsburgh Athletic Association Pittsburgh |
| Combustion Equipment Service Quakertown |
Pittsburgh Brewing Co. Pittsburgh |
| Combustion Systems Pittsburgh |
Pittsburgh Bridge Co. Rochester |
| Comet – Chester |
Pittsburgh Buffalo Co. – Burgettstown |
| Comfort Inn – Pittsburgh |
Pittsburgh Buffalo Co. Ellsworth |
| Cominsky Warehouse – Windber |
Pittsburgh Buffalo Co. Marianna |
| Cominsky Warehouse – Wison |
Pittsburgh Buffalo Co. Pittsburgh |
| Commerce Square – Philadelphia |
Pittsburgh City, Flower Co. Gibsonia |
| Commerce St. Building – Philadelphia |
Pittsburgh Coal & Iron Co. |
| Commerce Street Building – Philadelphia |
Pittsburgh Coal Co. Allegheny |
| Commercial & Industrial Jobs – Luzerne County |
Pittsburgh Coal Co. Grindstone |
| Commercial Alcohol – Philadelphia |
Pittsburgh Coal Co. Imperial |
| Commercial Asbestos Paper – Erie |
Pittsburgh Coal Co. Pittsburgh |
| Commercial Gazette Building – Pittsburgh |
Pittsburgh Coal Co. Shops – Library |
| Commercial Industrial Jobs – Luzerne County |
Pittsburgh Coke & Chemical – Clairton |
| Commercial Jobsites – Altoona |
Pittsburgh Coke & Chemical – Monessen |
| Commons At Fallsington – Morrisville |
Pittsburgh Coke & Chemical Co. – McKees Rocks |
| Commonwealth Ave. & Foster St. |
Pittsburgh Coke & Iron Co. – Pittsburgh |
| Commonwealth of Pa Selinsgrove |
Pittsburgh Coke Chemical Clairton |
| Commonwealth Of Pennsylvania – Dept. Of Public Instruction – Indiana |
Pittsburgh Coke Chemical McKees Rocks |
| Commonwealth Of Pennsylvania – Laurelton State Village – Laurelton |
Pittsburgh Coke Chemical Monessen |
| Commonwealth Of Pennsylvania – State Teachers College – Indiana |
Pittsburgh Coke Chemical Neville Island |
| Commonwealth Of Pennsylvania- Dept. Of Public Instruction – Clarion |
Pittsburgh Coke Iron Co. Pittsburgh |
| Commonwealth of Pennsylvania Institution Storeroom Dept Justice – Bellefonte |
Pittsburgh Commercial – Pittsburgh |
| Commonwealth Of Pennsylvania- State Corr Inst. – Bellefonte |
Pittsburgh Commercial Heating – Pittsburgh |
| Commonwealth of Pennsylvania State Penitentiary Graterford |
Pittsburgh Conneaut Dock Co. – Pittsburgh |
| Commonwealth Title Insurance & Trust Co. – Philadelphia |
Pittsburgh Consolidation Coal Co – Library |
| Commonwealth Trust Co. – Pittsburgh |
Pittsburgh Consolidation Coal Co. Mine Pilot Plant |
| Community Central Energy Corp. – Scranton |
Pittsburgh Consolidation Coal Co. Pilot Plant Library |
| Community Home Improvement Co. Reading |
Pittsburgh Consolidation Coal Co. Pilot Plant Storeroom Library |
| Community Medical Center – Scranton |
Pittsburgh Consolidation Coal Co. R D Division Library |
| Con. Braeburn- Braeburn |
Pittsburgh Consolidation Coal Co. Storeroom Library |
| Conair Manufacturing Facility – Franklin |
Pittsburgh Construction & Engineering Co. – Pittsburgh |
| Conemaugh Generating Station Unit 1-2 New Florence |
Pittsburgh Corning – Owenton |
| Conemaugh Power Plant – Johnstown |
Pittsburgh Corning Corp. – Port Allegany |
| Conemaugh Power Station -Johnstown |
Pittsburgh Corning Corp. Pittsburgh |
| Conemaugh Power Station Units #1 #2 New Florence |
Pittsburgh Corning Plant Port Allegany |
| Conemaugh Station – Huff |
Pittsburgh Cot Flower Co. – Gidsoni |
| Conemaugh Station – Miller Planner Bldg – Markleysburg |
Pittsburgh Crankshaft Service – Pittsburgh |
| Conemaugh Station Unit 1 – Pittsburgh |
Pittsburgh Crucible Steel Co. – Midland |
| Conemaugh Steam Electric Station – Conemaugh Indiana County |
Pittsburgh Crucible Steel Midland |
| Conemaugh Valley Memorial Hospital – Johnstown |
Pittsburgh Cut Flower Co. Gibsonia |
| Conestoga Traction Co. – Lancaster |
Pittsburgh Department of Charities Marshalsea |
| Conewango Refining Co. – Warren |
Pittsburgh Des Moines Steel Pittsburgh |
| Congoleum Co. Inc. – Maple Glen |
Pittsburgh Design Services – Carnegie |
| Congoleum Co. Inc. Marcus Hook |
Pittsburgh Die & Casting Co – Swissvale |
| Congoleum Co. Marcus Hook |
Pittsburgh Die Casting Co. Pittsburgh |
| Congoleum-Nairn, Inc. – Maple Glen |
Pittsburgh Ferromanganese Co. – Chester |
| Conn Welding & Machine Co. New Castle |
Pittsburgh Flexicore Co. Monongahela |
| Conneaut & Erie Traction Co. – Elk Station |
Pittsburgh Forge & Iron Co. Allegheny |
| Connellsville Airport – Connellsville |
Pittsburgh Forge & Iron Co. Pittsburgh |
| Connellsville Glass Plant – Connellsville |
Pittsburgh Forge & Iron Co. Woods Run |
| Connellsville High Rise – Connellsville |
Pittsburgh Forgings Co. – Coraopolis |
| Connellsville Railroad |
Pittsburgh Gas & Coke Co. Glassport |
| Connelly Containers – Philadelphia |
Pittsburgh Gas & Coke Co. Pittsburgh |
| Connelly Containers, Inc. Bala Cynwyd |
Pittsburgh Gas Coal Co. – Iselin |
| Connelly Containers, Inc. Philadelphia |
Pittsburgh Gear Co – Pittsburgh |
| Connelly Paper Co. Philadelphia |
Pittsburgh Harmony Butler & New Castle RR Evans City |
| Connor Towers – Johnstown |
Pittsburgh Heat – Pittsburgh |
| Conrail – Altoona |
Pittsburgh Housing Authority, Terrace Village Pittsburgh |
| Conrail – Hollidaysburg |
Pittsburgh International Airport – Moon Township |
| Conrail Consolidated Railroad – Reading |
Pittsburgh Iron & Steel Engineering Co. – Pittsburgh |
| Conrail Penn Central RR |
Pittsburgh Knife & Forge Co. – Coraopolis |
| Conshohocken – Clearfield |
Pittsburgh Lake Erie Railroad Beaver Falls |
| Conshohocken Worsted Mills Co. – Connellsville |
Pittsburgh Lake Erie Railroad Co. – McKees Rocks |
| Conshohocken Worsted Mills Co. Philadelphia |
Pittsburgh Lake Erie Railroad Depot – Pittsburgh |
| Consolick Com Station – Tamarack |
Pittsburgh Lake Erie Rr Depot – Pittsburgh |
| Consolidated Cigar Co. – Lancaster |
Pittsburgh McKeesport & Connellsville Railroad – Pittsburgh |
| Consolidated Cigar Corp. – Carbondale |
Pittsburgh McKeesport & Westmoreland Railway Co. – McKeesport |
| Consolidated Cigar Corp. Carbon |
Pittsburgh Mechanical Systems Inc. – Pittsburgh |
| Consolidated Cigar Corp. Mafco McAdoo |
Pittsburgh Metal Process – Pittsburgh |
| Consolidated Coal Co. – Library |
Pittsburgh Milling Co. Allegheny |
| Consolidated Coal Co. New Kensington |
Pittsburgh Milling Co. Pittsburgh |
| Consolidated Coal Co. Washington |
Pittsburgh National Bank – Aliquippa |
| Consolidated Comstock Co. Pittsburgh |
Pittsburgh National Bank – Pittsburgh |
| Consolidated Gas Delmont |
Pittsburgh Nipple Works Pittsburgh |
| Consolidated Gas Supply Corp. – Pittsburgh |
Pittsburgh Plate (Ppg) Glass Plant – Creighton |
| Consolidated Gas Supply Corp. Station Sabinsville |
Pittsburgh Plate Glass |
| Consolidated Ice Co. – Pittsburgh |
Pittsburgh Plate Glass Co. Allegheny |
| Consolidated Mold Products – Scranton |
Pittsburgh Plate Glass Co. Charleroi |
| Consolidated Rail Corp. – Philadelphia |
Pittsburgh Plate Glass Co. Creighton |
| Consolidated Railway Corp. Conway |
Pittsburgh Plate Glass Co. Ford City |
| Consolidated Railway Corp. Enola |
Pittsburgh Plate Glass Co. Harmarville |
| Consolidated Railway Corp. Philadelphia |
Pittsburgh Plate Glass Co. Kennerdell |
| Consolidated Steel & Wire Co. – Allentown |
Pittsburgh Plate Glass Co. Natrium |
| Consolidated Steel & Wire Co. – Beaver Falls |
Pittsburgh Plate Glass Co. Pittsburgh |
| Consolidated Steel & Wire Co. – Pittsburgh |
Pittsburgh Plate Glass Co. Port Kennedy |
| Consolidated Steel & Wire Co. – Rankin |
Pittsburgh Plate Glass Co. Springdale |
| Consolidated Traction Co. – Pittsburgh |
Pittsburgh Plate Glass Co. Tarentum |
| Consolidation Coal Co. – Jenner |
Pittsburgh Plate Glass Co. Tipton |
| Consumers Gas Co. – Reading |
Pittsburgh Plate Glass Co. Works Ford City |
| Consumers Light Co. – Plymouth |
Pittsburgh Plate Glass Glass Division Work No 6 Ford City |
| Consumer’s Mining – Harmaville |
Pittsburgh Plate Glass Glass Research Center Harmarville |
| Consumers Power- J R Whitting Power Plant – Erie |
Pittsburgh Plate Glass Paint Brush Division Springdale |
| Container Corp. of America Manayunk |
Pittsburgh Plate Glass PP & G Industries Creighton |
| Container Corp. of America Philadelphia |
Pittsburgh Plumbing Dept Dock No 5 Pittsburgh |
| Container Corp. of America Rencoyd |
Pittsburgh Plumbing Shop |
| Container Division Aldan Borough |
Pittsburgh Post-Gazette |
| Contee Sand & Gravel Co. – Johnstown |
Pittsburgh Power Station – New Castle |
| Continental Can Co. Mifflin |
Pittsburgh Powerhouse – Pittsburgh |
| Continental Can Co. Washington |
Pittsburgh Press – Pittsburgh |
| Continental Diamond Fibre Diamond State Fibre Co. Bridgeport |
Pittsburgh Provision & Packing Co. – Pittsburgh |
| Continental Distilling Corp. Philadelphia |
Pittsburgh Public Safety Building |
| Continental Foundry – Corapolis |
Pittsburgh Public Theatre |
| Continental Mills Inc – Philadelphia |
Pittsburgh Railways – Pittsburgh |
| Continental Oil Co. Chester |
Pittsburgh Railways Co. – Beaver Falls |
| Continental Rubber Works – Erie |
Pittsburgh Railways Co. Brunots Island Pittsburgh |
| Continental Wire & Cable – York |
Pittsburgh Railways Co. Pittsburgh |
| Contract Server Trucking Co. Calmar |
Pittsburgh Realty Co. Pittsburgh |
| Convalescent Home – Canonsburg |
Pittsburgh Reduction Co. – New Kensington |
| Convalescent Home – New Castle |
Pittsburgh Reduction Co. – Pittsburgh |
| Convent of Mercy Pittsburgh |
Pittsburgh Rochester Coal Indiana |
| Convention Center – Philadelphia |
Pittsburgh Screw & Bolt – Mt. Pleasant |
| Coolbaugh – Philadelphia |
Pittsburgh Screw & Bolt Co. Monaca |
| Cooper Bessemer Plant – Grove City |
Pittsburgh Screw Bolt – Mt. Pleasant |
| Cooper Energy Services – Grove City |
Pittsburgh Screw Bolt Co. Pittsburgh |
| Cooper Hewitt Co. Durham Ironworks – Riegelsville |
Pittsburgh Seamless Tube Co. – Beaver Falls |
| Cooper Industries – Corry |
Pittsburgh Shear Knife & Machine Co. – Pittsburgh |
| Cooper Industries, Inc. – Canonsburg |
Pittsburgh Sheet Metal – Connellsville |
| Cooperative Power Plant – Reading |
Pittsburgh Standard Conduit Enameled Metals – Etna |
| Coplay Cement Manufacturing Co. – Allentown |
Pittsburgh Steamship Co. – Pittsburgh |
| Coplay Cement Manufacturing Co. Coplay |
Pittsburgh Steel – Charleroi |
| Coplay Cement Manufacturing Nazareth |
Pittsburgh Steel – Midland |
| Copper Pittsburg Co. – Bridgeville |
Pittsburgh Steel Casting Co. – Pittsburgh |
| Copper Range Co. – Leetsdale |
Pittsburgh Steel Co. Alicia |
| Copperweld Steel – Glassport |
Pittsburgh Steel Co. Allenport Plant Allenport |
| Copperweld Steel – McKeesport |
Pittsburgh Steel Co. Coke Plant Monessen |
| Copperweld Steel Rod & Wire Mill – Glassport |
Pittsburgh Steel Co. McKees Rocks |
| Coraopolis Ice Plants – Coraopolis |
Pittsburgh Steel Co. Monessen |
| Coraopolis Sewage Treatment Center – Coraopolis |
Pittsburgh Steel Corp. Pittsburgh |
| Corbits, Inc. – Birdsboro |
Pittsburgh Steel Foundry Co. – Glassport |
| Corn & Corn Cob Products – Philadelphia |
Pittsburgh Steel Foundry Co. Pittsburgh |
| Cornell Manufacturing Co. – Laceyville |
Pittsburgh Steel Midland |
| Corning Bradford |
Pittsburgh Steel Products Co. Allenport |
| Corning Charleroi |
Pittsburgh Street Railway Co |
| Corning Glass – Bellefonte |
Pittsburgh Terminal Railroad & Coal Co. – Horning |
| Corning Glass Co. Bellefonte |
Pittsburgh Terminal Warehouse & Transfer Co. – Pittsburgh |
| Corning Glass Co. Bradford |
Pittsburgh Theological Seminary – Pittsburgh |
| Corning Glass Co. Chambersburg |
Pittsburgh Thermal – Pittsburgh |
| Corning Glass Co. Charleroi |
Pittsburgh Thermal Limited Partnership – Pittsburgh |
| Corning Glass Co. Star Junction |
Pittsburgh Tool Steel Wire – Monaca |
| Corning Glass Plant – Pittsburgh |
Pittsburgh Tool Steel Wire Monaca |
| Corning Glass Works – Bradford Plant Bradford |
Pittsburgh Tube – Monaca |
| Corning Glass Works – State College |
Pittsburgh University – Pittsburgh |
| Corning Glass Works Charleroi |
Pittsburgh Valve & Fitting Co. – Pittsburgh |
| Corning Glass Works Greencastle |
Pittsburgh Valve Foundry & Construction Co. – Pittsburgh |
| Cornwall Iron Co. – Cornwall |
Pittsburgh Wire Co. – Braddock |
| Cornwall Ore Bank Co. – Cornwall |
Pittsburgh Wire Co. Pittsburgh |
| Coronada Apartments – Pittsburgh |
Pittsburgh Works – Pittsburgh |
| Corrigan- McKenney Steel Co. Sharpsville |
Pittsburgh Works Pittsburgh |
| Corrigan-McKenney Steel Co. – Black Lick |
Pittsburgh, Cincinnati, Chicago & St. Louis Railroad – Pittsburgh |
| Corry Railway Co. |
Pittsburgh, Cincinnati, Chicago & St. Louis RR Scully |
| Coudersport Junior & Senior High School – Coudersport |
Pittsburgh, Harmony, Butler & New Castle Railway Co. – Harmony |
| Council Rock High School – Bucks County |
Pittsburgh lockhart Iron & Steel |
| Country Belle Cooperative Pittsburgh |
Pittston Coal Mining Co. – Sugar Notch |
| Country Dry Wall – Wiliamsport |
Plant Asbestos Co. – Pittsburgh |
| Country Home – Altoona |
Plant Slab Z Palmerton |
| County Home – Somerset |
Plastics Division Kobuta Plant Kobuta |
| Courtney Power Station – Monongahela |
Plaza Apartments – Philadelphia |
| Cowan Shannock Coal & Coke Co. Yatesboro |
Ple Railroad McKees Rock |
| Cowanshannock Coal & Coke Co. – Punxsutawney |
Pleasant Hills Municipal – Pleasant Hills |
| Coxe Brothers & Co. – Deringer |
Plum Boro Schools – Plum Boro |
| Coxe Brothers & Co. Drifton |
Plum Boro Water Authority – Plum |
| Coxe Traveling Grate Co. – Port Carbon |
Plumb Inc. Fayette R Philadelphia |
| Crafton Ice Co. – Crafton |
Plymouth #5 Washery – Plymouth Junction |
| Crafton Ingram Shopping Center – Crafton |
Plymouth Coal Co. – Wilkes Barre |
| Cramp School – Philadelphia |
Plymouth Meeting |
| Cramp Shipbuilding Philadelphia |
Plymouth Number 5 Washery Plymouth Junction |
| Cramp Shipyard Dravo Corp. Philadelphia |
PNB – Oakland |
| Cramps Shipbuilding Co. – Philadelphia |
Pnb Building – Pittsburgh |
| Cranberry Lincoln Mercury – Cranberry |
Point Breeze Gas Works – Philadelphia |
| Crane Co. Johnstown |
Point Breeze Refinery – Philadelphia |
| Crane Co. New Castle |
Point Breeze Refinery Wax Plant Philadelphia |
| Crane Co. Verona |
Point Breeze Slabbing Packaging Area Philadelphia |
| Crane Ironworks – Catasauqua |
Point Marion Powerhouse – Point Marion |
| Crane Supply Co. – Pittsburgh |
Pollock School – Philadelphia |
| Creek Lane – Burgettstown |
Pollock School Welsh Road Philadelphia |
| CReminton Rand – Montgomery County |
Poly Sar Aliquippa |
| Crescent Forgings Co. – Pittsburgh |
Polymer Corp. Reading |
| Crescent Iron – Philadelphia |
Polytechnic Institute Karachi |
| Crescent Mine – California |
Ponce De Leon Chester |
| Crescent Portland Cement Co. – Cresentdale |
Pope Tin Plate Co. – Pittsburgh |
| Crescent Portland Cement Co. Wampum |
Pope Tin Plate Co. Pittsburgh |
| Crescent Works – Pittsburgh |
Porcelain Products – Parkesburg |
| Cresmer Fence Co. – Exton |
Port Authority Transit – South Hills |
| Cresson State College – Cresson |
Port Authority Transit View Garage – View |
| Cressona Aluminum – Cressona |
Port Cherry School – McDonald |
| Crestview Gardens – New Castle |
Port Cherry |
| Crichton Coal & Coke Co. Robinson |
Port Wentworth |
| Croft & Allen Co. – Philadelphia |
Portage Coal Mining Co. – Portage |
| Cromble Corp. Phoenixville |
Portage High School – Portage |
| Cromby Generating Station – Cromby |
Porter Building – Pittsburgh |
| Cromby Station Philadelphia Electric Phoenixville |
Porter Co A K – Philadelphia |
| Crompton & Knowles – Gibraltor |
Porter Co. H K – Philadelphia |
| Crompton Knowles Gibraltar |
Portland Cement Co. Allentown |
| Cross Brothers Meat 2nd Street Philadelphia |
Portland Generating Station Mt. Bethel |
| Cross Brothers Meat Packing – Philadelphia |
Portland Generating Station Unit #1-2 Portland |
| Cross Creek Coal Co. Deringer |
Portland Power Plant Upper Mount Bethel |
| Cross Creek Coal Co. Drifton |
Portland Power Station – Portland |
| Cross Creek Coal Co. Oneida |
Post Office – Philadelphia |
| Crow Island Bof Monaca |
Post Office 30th Street Station Philadelphia |
| Crown Associated Products Philadelphia |
Potero John V Philadelphia |
| Crown Cork – Conchahaka |
Potlach Paper Mill – Lock Haven |
| Crown Paperboard Co. – Philadelphia |
Potlach Paper Mill Lock Haven |
| Crown Products – Philadelphia |
Potlatch – National Paper Co. – Ransom |
| Crown, Cork & Seal – Philadelphia |
Potomac Water Treatment & Power Plant – Philadelphia |
| Crozier Medical Center – Chester |
Potter Sons & Co. – Philadelphia |
| Crucible Coal Co. Anensburg |
Pottsgrove School – Pottstown |
| Crucible Colt Industries Midland |
Pottstown Hospital – Pottstown |
| Crucible Steel Co. of America Aliquippa |
Pottstown Plant – Pottstown |
| Crucible Steel Co. of America Blair Station |
Pottsville Area Middle School – Pottsville |
| Crucible Steel Co. of America Clairton |
Pottsville Bleach & Dye – Schuykill Haven |
| Crucible Steel Co. of America Crescent Works Pittsburgh |
Pottsville Iron & Steel Co. – Pottsville |
| Crucible Steel Co. of America Lawrenceville |
Pottsville Water Co. – Minersville |
| Crucible Steel Co. of America Midland |
Pottsville Water Co. Pottsville |
| Crucible Steel Co. of America Oakdale |
Powelton Electric Co. – Philadelphia |
| Crucible Steel Co. Station 301 Midland |
Powelton Gardens – Philadelphia |
| Crucible Steel Plant – Midland |
Power Atomic Power Station – Shippensburg |
| Crump, Inc. – Shippensburg |
Power Piping Co. – Clairton |
| Crystal Ice Co. Inc. Allegheny City |
Power Piping Donora |
| Csx Transportation – Philadelphia |
Power Piping Pittsburgh |
| Cudahy Packing Co. – Philadelphia |
Power Plant Wilkes Barre |
| Culp Industrial Insulation Co. – Kingston |
Power Systems Operations – Ebenburg |
| Culp Industrial Insulation Co. Lock Haven |
Powerhouse – Butler |
| Cumberland Light, Heat & Power Co. – Bridgeport |
Powerhouse Milesburg |
| Cumberland Valley Division of Pennsylvania Railroad Co. – Chambersburg |
Powerhouse Shawville |
| Curry H R Co. Inc – Pittsburgh |
Powers Weightman Rosengarten Co. – Philadelphia |
| Curtin Elementary School – Altoona |
PP & G Industries Allison Park |
| Curtis Publishing Co. – Philadelphia |
PP & G Industries Carlisle |
| Curtis Publishing Co. Sharon Hill |
PP & G Industries Creighton |
| Curtis Publishing House – Sharon |
PP & G Industries Ford City |
| Curtis- Wright Corp. Propeller Division Beaver |
PP & G Industries Greensburg |
| Curtis-Wright Corp. – Beaver |
PP & G Industries Harmar Township |
| Custom Carpet – Washington |
PP & G Industries Harmarville |
| Custom Insulation Co. – York |
PP & G Industries Jeannette |
| CW & Heating – Ellwood City |
PP & G Industries Kent |
| CW Plumbing & Heating – Ellwood City |
PP & G Industries Meadville |
| CW Plumbing Heating – Ellwood City |
PP & G Industries Mt. Holly |
| Cyclops Chemical Plant – Bridgeville |
PP & G Industries Pittsburgh |
| Cytemp Specialty Steel – Titusville |
PP & G Industries Springdale |
| D & D Bowling Alley – New Castle |
PP & G Industries Tipton |
| D Oher Engr. Co. – Philadelphia |
PP & G Pittsburg Plate Glass Harmarville |
| D. B. Fuller – Philadelphia |
Pp& L Powerhouse – Washington |
| D. L. Clark Co. Allegheny |
Ppg Industries – Carlisle |
| D. L. Molden & Brother – Philadelphia |
Ppg World Headquarters Building |
| D. L. Molden & Brother Philadelphia |
PPG World Headquarters Building – Pittsburgh |
| D. Lutz Son Brewing Co. Allegheny City |
PPL Brunner Island Steam Electric Station Unit 3 York Haven |
| D. M. Bare Paper Co. – Roaring Springs |
Ppl Electric Utilities Corp – Allentown |
| D. M. Trahan Proj Supt Homer City |
Pram Co. – Wilmerding |
| D. O. E – Bruceton |
Precise Plastics – Erie |
| D. Oher Engineering Co. – Philadelphia |
Precision Grinding Co. – Philadelphia |
| D. R. Bendix Co. Pittsburgh |
Precision Grinding Wheel – Philadelphia |
| D. R. Lane – Pittsburgh |
Precision Heat Treatment South Hampton |
| D. S. Keith Junior High School – Altoona |
Precision Products Co. – Washington |
| D. T. Watson Home – Sewickley |
Precision Tool & Die – Butler |
| D. Trainer & Sons – Linwood |
Premier Sugar Mill & Distillery Co. Ltd Mardan |
| Dager & Cox, Eureka Paper Mills – Bridgeport |
Presbyterian Church – Bradford |
| Dahlgren – Philadelphia |
Presbyterian Church – PA |
| Dail Rock Coal Co. – Wyoming |
Presbyterian Home For Widows & Single Women – Philadelphia |
| Dale Boring Tire Shop – Johnstown |
Presbyterian Hospital – Philadelphia |
| Dally Engineering Valve Co. Pittsburgh |
Prescotech – Erie |
| Dam – Brownsville |
Presque Isle Boiler – Erie |
| Damascus- Bishop Tube Co. – Greenville |
Presque Isle Paper Co. – Erie |
| Damascus Nickel Steel Co. – Carnegie |
Pressed Steel Car Co. Allegheny |
| Damascus Steel – Munhall |
Pressed Steel Car Co. McKees Rocks |
| Dambrosio Clothing Philadelphia |
Pressed Steel Car Co. Pittsburgh |
| Dana Corp. – Reading |
Prestolite Battery – Reading |
| Dana Corp. Parish Frame Division – Reading |
Price Battery Corp. – Hamburg |
| Daniel J. Keating – Philadelphia |
Price H C & Co. – Philadelphia |
| Danlevy Packing Co. – Liberty |
Pride Chester |
| Danville & Sunbury Street Railway Co. – Danville |
Prime Manufacturers – Springdale |
| Danville Powerhouse |
Primrose Colliery – Mahanoy City |
| Danville Powerhouse Washingtonville |
Princess Furnace Co. – Glen Wilton |
| Danville State Hospital – Danville |
Printing Press – Minersville |
| Danville Stove & Manufacturing Co. – Danville |
Prison- Men’s House Of Detention – Philadelphia |
| Danville Structural Tubing Co. – Danville |
Procter & Gamble – Tunkhannock |
| Danville Water Works – Danville |
Procter & Gamble Co. Mehoopany |
| Darby Paper Co. – Darby |
Procter & Gamble Tunkhannock |
| Daring Paper Co. – Bridgeport |
Proctor & Gamble Mehopany |
| Daring Paper Co. Downingtown |
Proctor & Schwartz Inc. Philadelphia |
| Darlington Building – Philadelphia |
Proctor Ellison Co. – Elkland |
| Daugherty Refinery Division Dept A Petrolia |
Proctor Swartz Philadelphia |
| Dauphin County Prison – Harrisburg |
Progress Manufacturing Philadelphia |
| Davis Hospital – Clarksburg |
Progressive Manufacturing Co. – Philadelphia |
| Davison Coke & Iron Co. – Nequehoning |
Projectile Plant #2 Army Gun Carriago Shop – S. Bethlehem |
| Davison Coke & Iron Co. – Neville Island |
Prospect Colliery – Wilkes Barre |
| Davy McKee Corp. Pittsburgh |
Providence – Primrose |
| Day & Zimmerman – Coatesville |
Providence Hospital – Beaver Falls |
| Days Inn – Bristol |
Prudential Insurance Building – Upper Dublin |
| DE Lackawanna & Western RR Co. Diamond Mines Scranton |
PS 321 William Penn, 180 Seventh Ave. Brooklyn, NY |
| De Witt P Henry Co. – Philadelphia |
Pt. Richmond Philadelphia |
| Dearth Mines |
Pubicker Industries – Philadelphia |
| Decamos Corp. – Pittsburgh |
Public Debt Building – Parkersburg, WV |
| Decker Sq Stack Job – Bala Cynwyd |
Public Ledger Building – Philadelphia |
| Decorating & Display Studio – Lancaster |
Public School – Philadelphia |
| Deemston Boro |
Public Service Corp. of New Jersey Philadelphia |
| Defense Plant Corp – Philadelphia |
Public Service Gas Co. – Philadelphia |
| Defense Supply Agency – Philadelphia |
Publicker Chemical Plant Station 1 Philadelphia |
| Degol Brothers – Gallitzin |
Publicker Commercial Alcohol Co. – Cornwell Heights |
| Delancy School – Philadelphia |
Publicker Industries Chemical Plant Station 1 Philadelphia |
| Delaware & Hudson Canal Co. Wilkes Barre |
Publicker Industries South Philadelphia |
| Delaware & Hudson Co. Archibald |
Publicker Industries, Distillers – Philadelphia |
| Delaware & Hudson Co. Carbondale |
Publicker Industries, Inc. – Philadelphia |
| Delaware & Hudson Co. Hudson |
Publickers Distillery – Philadelphia |
| Delaware & Hudson Co. Olyphant |
Publiker Industries – Philadelphia |
| Delaware & Hudson Co. Parsons |
Pullman Co. – Pullman |
| Delaware & Hudson Co. Plymouth Junction |
Pullman Standard Car Manufacturing Co. – Butler |
| Delaware & Hudson Co. Providence |
Pullman Standard Plant – Butler |
| Delaware & Hudson Co. Scranton |
Pumping Station – Ford City |
| Delaware & Hudson Co. Wilkes Barre |
Pumping Station – Reading |
| Delaware & Hudson Coal Handling Plant Carbondale |
Pumping Station-Landers Point Landers Point |
| Delaware & Magnetic Springs Railway Co. – Pittsburgh |
Punxsutawney Elementary School – Punxsutawney |
| Delaware Alloy Forge – Philadelphia |
Punxsutawney Hardware – Punxsutawney |
| Delaware Asbestos – Philadelphia |
Punxsutawney Iron Co. – Punxsutawney |
| Delaware Co. Memorial Hospital – Drexal Hill |
Punxsutawney Secondary School – Punxsutawney |
| Delaware Corp. Pennsylvania Corp. |
Purchase Line School – Mahaffey |
| Delaware County & Philadelphia Electric Railway Co. – Clifton Heights |
Purchasing Department – 3 Gateway Center – Pittsburgh |
| Delaware County Central Heating Co. – Springfield |
Purchasing Department – Pittsburgh |
| Delaware County Courthouse – Media |
Purchasing Department 3 Gateway Center Pittsburgh |
| Delaware County Electric Co. – Chester |
Pure Oil Co. Maple Glen |
| Delaware County Hospital Delaware County |
Pure Oil Co. Marcus Hook |
| Delaware County Incinerator Chester |
Purex Corp. – Bristol |
| Delaware County Prison – Thornton |
Pusey & Jones Shipbuilding Co. – Wilmington |
| Delaware County Prison Delaware County |
Pyne Colly – Pyne Colly |
| Delaware Generating Station Philadelphia |
Pyne Colly Taylor |
| Delaware Insulation Co. – Lester |
Pyrotek – Carlisle |
| Delaware Lackawanna & Western Railroad Co. Plymouth |
Quaker Boiler Repairing Co. – Philadelphia |
| Delaware Lackawanna & Western Railroad Co. Scranton |
Quaker Chemical Corp. – Connellsville |
| Delaware Mine – Hudson |
Quaker City Chocolate Co. – Philadelphia |
| Delaware Power & Light Co. – Edge Moor |
Quaker City Dye Works – Philadelphia |
| Delaware River Cordage Mill – Philadelphia |
Quaker City Ironworks – Philadelphia |
| Delaware River Steel Co. – Chester |
Quaker City Rubber Co. Wissinoming |
| Delaware Rubber Co. Philadelphia |
Quaker Export Packaging Co. Inc. – Philadelphia |
| Delaware Ship Supply Co. Philadelphia |
Quaker Markets – Altoona |
| Delaware Station – Philadelphia |
Quaker Oats Co. – Shiremanstown |
| Delaware Storage & Freezing Co. – Philadelphia |
Quaker Rubber Co. Philadelphia |
| Delaware Valley Drywall – Croyden |
Quaker State – Parkersburg, WV |
| Delaware Valley Hospital – Langehorne |
Quaker State Machine Co. – Willow Grove |
| Delaware Waterside Station – Philadelphia |
Quaker State Metals Inc. Manehim Pike Lancaster |
| Delaware Works Marcus Hook |
Quaker State Oil Refinery Co. Emlenton |
| Delaware, Lackawanna & Western Railroad Co. Kingston |
Quaker State Oil Refinery Co. Farmers Valley |
| Delaware, Lackawanna & Western Railroad Co. Nanticoke |
Quaker State Oil Refinery Co. Oil City |
| Delaware, Lackawanna & Western Railroad Co. Plymouth |
Quaker State Oil Refinery Co. Smethport |
| Delaware, Lackawanna & Western Railroad Co. Scranton |
Quaker State Oil Refining Co. Mckean Plant Farmers Valley |
| Delaware, Lackawanna & Western Railroad Co. Taylor |
Quaker State Service Station – Brady |
| Dell’s Restaurant Pittsburgh |
Quakertown Brick & Tile Co – Quakertown |
| Delmont Builder Supply – Delmont |
Quakertown Chrysler Plymouth – Quakertown |
| Delta Ecuador – Chester |
Quakertown Electric Department – Quakertown |
| Delta Equipment Co. – Philadelphia |
Quakertown Tractor Co. – Quakertown |
| Delta Finishing Co. – Philadelphia |
Quality Markets – Titusville |
| Delworth Paper Co. – New Castle |
Queen City Cleaners Aliquippa |
| Demoin Steel – Pittsburgh |
Quickway Inc. Philadelphia |
| Dent – Philadelphia |
Quin- T Corp. Erie |
| Dent Plumbing & Heating, Inc. – Light Street |
Quin-T Corp. – Erie |
| Dent Plumbing Heating, Inc. Light Street |
Quint Corp. Erie |
| Depaco Paper Co. – Downington |
Quonset Point- Paulson Lab |
| Department Of Motor Vehicles Building – Harrisburg |
R & J Supply Co. – Erie |
| Department Of Public Welfare – Pennhurst State School – Spring City |
R & J Supply Co. |
| Department Of Safety – Philadelphia |
R & P Coal Co. – Ernes |
| Department Of the Interior, Bureau Of Mines – Pittsburgh |
R. & H. Simon – Easton |
| Dept. of Justice Ins. Store Room |
R. A. Duckworth, P. G. H. Steamline Philadelphia |
| Dept. of Public Instruction |
R. B. Murray Oakland Arcade Co. – Pittsburgh |
| Dequesne Light Co. 30th St. Station Pittsburgh |
R. C. A. Victor – Lancaster |
| Des Moines Iron Pittsburgh |
R. C. Can Canning Plant – Bradford |
| Des Moines Steel – Pittsburgh |
R. C. Remmey Division – Philadelphia |
| Design Techniques – Stroudsburg |
R. D. Harrer Construction Mount Pleasant |
| Desuperheater Station – Reducing Station – McKees Rocks |
R. D. Isaacs & Son – Wilkes Barre |
| Detroit Edison Pennsalt Power Plant |
R. D. Werner Co. – Greensburg |
| Detroit Pennsylvania Salt Mill |
R. D. Wood – Philadelphia |
| Detroit Steel Products Co. – Erie |
R. D. Wood Building – Philadelphia |
| Detroit Steel Products Elizabeth |
R. D. Wood Philadelphia |
| Deval Corp. – Philadelphia |
R. E. A. Shop – Hollidaysburg |
| Dewart Milk Products Co. – Trout Run |
R. G. Peiliker Applied Research Laboratory Monroeville |
| Dewitt P. Henry Candy Co. Philadelphia |
R. H. Hickman Co. – McKees Rocks |
| Dexter Portland Cement Co. – Nazareth |
R. Heckscher & Sons – Swedeland |
| Dexter Portland Cement Co. Siegfried |
R. Hecksher & Sons – Philadelphia |
| Diamond Alkali Co. – Pittsburgh |
R. J. Carey Co. – Wiliamsport |
| Diamond Bowling Lanes – New Castle |
R. J. Carey Co. Williamsport |
| Diamond Drill Machine Co. – Birdsboro |
R. J. Supply Co. Erie |
| Diamond Mines – Scranton |
R. K. Laros Silk Co. – Bethlehem |
| Diamond National Bank Building – Pittsburgh |
R. L. Miller Enola |
| Dickinson School Of Law – Carlisle |
R. M. Armstrong – Chester |
| Dickson Mine, Green Ridge Station – Scranton |
R. M. Steel Carnegie |
| Dickson School – Swissvale |
R. O. Werner Co. Greenville |
| Didier Station – Bethlehem |
R. R. Shops – McKees Rocks |
| Dietz Trucking Co. – Pittsburgh |
R. Shafer Supt. – Cornwell Heights |
| Dill & Collins Co. Philadelphia |
R.A. Duckworth, P.G.H. Steamline – Philadelphia |
| Dillingers Distilleries, Inc. – Ruffs Dale |
Racoon State Park Dept of Property Supply Project Pittsburgh |
| Dilworth Porter & Co. Limited Pittsburgh |
Racquet Club Apartments – Levittown |
| Dilworth Porter Co. – Pittsburgh |
Racquet Club Apartments – Monreoville |
| Dining Hall, State Correctional Institution Cambridge Springs |
Radi S Auto Wrecking Pittsburgh |
| Directors Of the Poor Of Allegheny County – Woodville |
Radiant Steel Products Co. Williamsport |
| DisCo. Plant – Imperial |
Radio Co. of America |
| Dispatch Publishing Co. – Pittsburgh |
Radio Company of America Dunmore |
| Diversitech General – Jeannette |
Radio Corp. of America Tube Division Lancaster |
| Dixie Cup Easton |
Radio Corp. of America-RCA Lancaster |
| Dixie Cup Plant – Easton |
Radio Parts – Liberty |
| Dixmont Hospital for The Insane – Dixmont |
Radnor – Quarryville |
| Dixmont State Hospital – Sewickley |
Raido Corp Of America – RCA – Lancaster |
| Dixon Valve & Coupling Co. Philadelphia |
Railroad Penn Station |
| Dl Molden & Bro. – Philadelphia |
Railway Specialties – Bristol |
| Dna Auto Auction – New Stanton |
Railway Specialties Corp. Groyden |
| Dock Street Plant – Easton |
Railway Spring & Manufacturing Co. – Pittsburgh |
| Dodge & Day Nicetown, Philadelphia |
Railway Steel Spring Co. – Latrobe |
| Dodge Mines – Scranton |
Rainey Wood Coke Co. – Swedeland |
| Dodge Steel Co. – Philadelphia |
Ramada Inn – Brookville |
| Dodson Mines, Plymouth Coal Co. – Plymouth |
Ramsey Hardware & Paneling Co. – New Castle |
| Doe Bruceton |
Rankin Station – Pittsburgh |
| Doehler Jarvis Division, National Lead Industries, Inc. – Pottstown |
Rankin US Steel Carrie Furnace |
| D’Olier Engineering Co. – Philadelphia |
Rankin Works #2 Turbo Blower Rankin Mill Rankin |
| Dollar General – White Oak |
Ransom Hospital – Ransom |
| Dolonite Brick Corp. of America York |
Rapid Transit Street Railway Co. |
| Dolph Coal Co. Dunmore |
Raub Supply Lancaster |
| Dolph Coal Co. Pickville |
Ravensburg Bridge – Clairton |
| Dolph Coal Co. Scranton |
Raybestos-Manhattan Co. Manheim |
| Dolph Coal Co. Winton |
Raybestos-Manhattan Plant Manheim |
| Domino Sugar Philadelphia |
Rayburn Steel – Rayburn |
| Domino Sugar Refinery – Philadelphia |
Raymark Co. Manheim |
| Don Sotero Escarza – Ingo Portugalete |
Raystown Water Power Co. – Clover Creek |
| Donahue & Weber Construction Co. – Philadelphia |
Raystown Water Power Co. – Huntington |
| Donaldson Iron Co. – Emmaus |
RCA – Canonsburg |
| Donegon School – Bethlehem |
RCA – Lancaster |
| Donora Brewing Co. – Donora |
RCA – Mountaintop |
| Donora Brewing Co. – Pennsylvania |
RCA – Scranton |
| Donora Zinc Works – Donora |
RCA Building Sayre |
| Donovan Cement – Philadelphia |
RCA Corp. Lancaster |
| Donovan Co. – Philadelphia |
RCA Dunmore |
| Donovan Excavating – Titusville |
Rca Plant – Dunmore |
| Dorchester Apartments – Plymouth Meeting |
RCA Plant – Lancaster |
| Dormont Oldsmobile – Dormont |
RCA Tube Div. Color Slurry Iv Lancaster |
| Dorr Oliver, Inc. – Hazleton |
RCA Victor Division Buildings #2, 2A 2B Lancaster |
| Dorr-Oliver Inc. Spring Grove |
RCA Victor Division Manufacturing Plant Lancaster |
| Double Woven Corp. – Scranton |
RCA Victor Lancaster |
| Double Woven Corp. Of America – Dunmore |
RCA. Building – Sayre |
| Dougherty Bachran – Philadelphia |
RCA. Victor – Lancaster |
| Downey Center Mayview State Hospital – Bridgeville |
Reacing Railroad Co. Philadelphia |
| Downingtown Paper |
Read & Lovatt Manufacturing Co. Weatherby |
| Downingtown Paper- Downington |
Reading Co. Philadelphia |
| Downingtown Water Pollution Downingtown |
Reading Gray Iron Casting, Inc. Reading |
| Downtown Station – Pittsburgh |
Reading Iron Co. Danville |
| Dowty Corp. – Zeleinople |
Reading Iron Co. Emaus |
| Doyle & Co. – Philadelphia |
Reading Iron Co. Reading |
| Doylestown & Easton Street Railway Co. – Doylestown |
Reading Iron Co. Tube Works Reading |
| Doylestown & Willow Grove Railway Co. – Philadelphia |
Reading Ironworks – Reading |
| Dr W A Drysdale – Philadelphia |
Reading Metals Refining Co. – Reading |
| Dr. Lawrence Siegel’s Residence – Yardley |
Reading Railroad Co. King of Prussia |
| Dr. W.A. Drysdale – Philadelphia |
Reading Railroad Co. Philadelphia |
| Drake Hotel – Philadelphia |
Reading Railroad Co. Reading |
| Draper & Yost, Inc. – Tamaqua |
Reading Railroad Shops |
| Dravo – Brackenridge |
Reading Rehabilitation Hospital – Reading |
| Dravo Contracting Co. – Pittsburgh |
Reading Shale Brick Co. – Reading |
| Dravo Corp. Neville Island |
Reading Steel Foundry – Reading |
| Dravo Corp. New Brighton |
Reading Transport – Reading |
| Dravo Corp. Philadelphia |
Reading Transportation Plymouth Meeting |
| Dravo Corp. Pittsburgh |
Reading Tube Corp. Reading |
| Dravo Doyle Co. – Pittsburgh |
Reading Tube Division – Reading |
| Dravo Ship Corp. – Pittsburgh |
Reading Water Works – Reading |
| Dravo Shipbuilding – Nequehoning |
Reading Whitehall Paperboard – Reading |
| Dravo Shipbuilding Neville Island |
Real Estate Trust Building Philadelphia |
| Dravo Shipbuilding Pittsburgh |
Real Estate Trust Office Building – Philadelphia |
| Dravo Shipyard – Morton |
Recreation Hall – State College |
| Dravo Shipyards, Neville Island |
Red Lion High School Red Lion |
| Dredge Philadelphia – Chester |
Red Lion Plant – Philadelphia |
| Dresser Industries, Inc. Pittsburgh |
Red Rock Air Base – Red Rock |
| Dresser Manufacturing Division – Bradford |
Redington Standard Fittings Co. – Redington |
| Dresser Manufacturing Wellsboro |
Reed Danville State – Danville |
| Drever Co. Building # 1 & #2 Bethayres |
Reed Electric Co. – Philadelphia |
| Drexel Institute – Philadelphia |
Reed, Danville State Hospital Danville |
| Drexel University – Philadelphia |
Reedsdale Power Station Power Station – Kittanning |
| Driggs Seabury Ordnance Co. – Sharon |
Reedsville Power Station – Kittanning |
| Drunner Island Station York Haven |
Reese Metal Products Corp – Lancaster |
| Dubois Electric & Traction Co. – Dubois |
Reese Miller Plastering – Pittsburgh |
| Dubois Hospital – Dubois |
Refinery Indianola |
| Dubois Library – Dubois |
Refractory & Insulation Plant – Port Kennedy |
| Dubois Mall – Dubois |
Refractory Insulation Corp. Port Kennedy |
| Dubois Regional Medical Center – Dubois |
Refractory Specialties Sales Co. Morristown |
| Duer Spring & Manufacturing Co. Div. McKees Rocks |
Rehabilitation Center – Johnstown |
| Duff Manufacturing Co. – Pittsburgh |
Reichard Coulston Co. Bethlehem |
| Duff Norton Manufacturing Co. – Pittsburgh |
Reichard-Coulston Inc. – Philadelphia |
| Duff-Norton Manufacturing Co. – Pittsburgh |
Reider Brothers – Philadelphia |
| Duggan & Marcon, Inc. – Allentown |
Reigner & Engle Brewing Co. – Philadelphia |
| Duguesna Light Co. – Pittsburgh |
Reiners – Pittsburgh |
| Dunbar Furnace Co. – Dunbar |
Reisinger Prather Co. – Pittsburgh |
| Duncan & Miller Glass Plant – Washington |
Reitz Tool – Cochranton |
| Dunham-Bush – Harrisburg |
Reliable Luggage – New Castle |
| Dunlevy & Brother Co. – Liberty |
Reliance Cement Co. Coplay |
| Dunmore Iron & Steel Co. – Dunmore |
Reliance Coke Co. – Denbeau |
| Duplan Corp. – Hazleton |
Reliant Energy Mid Atlantic – Johnstown |
| Duplan Silk Corp – Hazleton |
Reliant Energy Mid Atlantic Johnstown |
| Dupont Chemical – Kettett Square |
Reliant Energy Wholesale Group – New Florence |
| Dupont De Nemours Co. – Philadelphia |
Reliant Energy Wholesale Group Shawville |
| Duquesne Brewing Bottling House Pittsburgh |
Remington- Rand Inc. – Philadelphia |
| Duquesne Brewing Co. Bottling House Pittsburgh |
Remington Rand Inc. Montgomery County |
| Duquesne Brewing Co. McKees Rocks |
Reminton Rand |
| Duquesne Brewing Co. Pennsylvania |
Remmey Division Philadelphia |
| Duquesne Brewing Co. Pittsburgh |
Remmey Donald B Wood Prod Southampton |
| Duquesne Forge Co. – Pittsburgh |
Remmey Refractories – Philadelphia |
| Duquesne Forge Co. Rankin |
Remmey Refractory – Philadelphia |
| Duquesne Ice Co. – Pittsburgh |
Remmy Division A P Green – Philadelphia |
| Duquesne Incinerator – Duquesne |
Rennepamp Supply Co. – Pittsburgh |
| Duquesne Light – Crescent Township |
Renovo Shops – Renovo |
| Duquesne Light – Springdale |
Republic Aluminum – Beaver Falls |
| Duquesne Light Co- Central Str Pittsburgh |
Republic Coke Works – Republic |
| Duquesne Light Co. #1 Shippingport |
Republic Coke Works Republic, Fayette County |
| Duquesne Light Co. 13th St. Station Pittsburgh |
Republic Heater Co. – Erie |
| Duquesne Light Co. 20th Station Pittsburgh |
Republic Heater Co. Erie |
| Duquesne Light Co. 30th St. Station Pittsburgh |
Republic Housing – Republic |
| Duquesne Light Co. B Station Storeroom Pittsburgh |
Republic Iron & Steel Co. – New Salem |
| Duquesne Light Co. Brunners Island |
Republic Iron & Steel Co. New Salem |
| Duquesne Light Co. Brunot Island Generating Station Storeroom Pittsburgh |
Republic Iron & Steel Co. Pittsburgh |
| Duquesne Light Co. Brunots Island Pittsburgh |
Republic Iron & Steel Co. Sharon |
| Duquesne Light Co. Cheswick #1 Springdale |
Republic Ironworks Pittsburgh |
| Duquesne Light Co. Cheswick Power Station Springdale |
Republic Steel Corp. Beaver Falls |
| Duquesne Light Co. Cheswick Station Cheswick |
Republic Steel Corp. New Brighton |
| Duquesne Light Co. Cycle Plant Pittsburgh |
Republic Steel Corp. Newton |
| Duquesne Light Co. Elrama Power Plant Storeroom Elrama |
Research & Development Building |
| Duquesne Light Co. Elrama Power Station Jefferson Hills |
Research & Development Center – Lancaster |
| Duquesne Light Co. Frank R. Phillips Power Station Cheswick |
Research Development Center Fire Test Room Lancaster |
| Duquesne Light Co. Glenwood Station Pittsburgh |
Research Development Ctr. Bldg. 4, 11, 12,15 Lancaster |
| Duquesne Light Co. James H. Reed Power Station Pittsburgh |
Research Div. – Pilot Plant- Station 73 – Pittsburgh |
| Duquesne Light Co. Nuclear Power Station Shippingport |
Residential Homes – Hawthorne |
| Duquesne Light Co. Phillips Power Plant Storeroom Wireton |
Rest Haven County Nursing Home – Schuykill Haven |
| Duquesne Light Co. Phillips Power Station South Heights |
Retreat State Hospital – Hunlock Creek |
| Duquesne Light Co. Phipps Power Plant Pittsburgh |
Revonah Yarn Mills – Hanover |
| Duquesne Light Co. Pittsburgh |
Rex Hide Rubber Co. – Brady |
| Duquesne Light Co. Rankin |
Reynold Machine – Midvale |
| Duquesne Light Co. Springdale |
Reynolds Manufacturing Co. – Avonmore |
| Duquesne Light Power – Pittsburgh |
Reynolds Manufacturing Plant – Avonmore |
| Duquesne Light South Heights Power Station – South Heights |
Reynolds Metals Co. Aluminum Plant Chester |
| Duquesne Power Plant – Aliquippa |
Rezner Heathers – Grove City |
| Duquesne Slag Products – Mifflin |
Rfg 1 Rfd Nbr 1 Pen Argyl |
| Duquesne Station Co. Pittsburgh |
Rhind Philadelphia |
| Duquesne Steel Co. – Cochran Station |
Rhodia, Inc. Morrisville |
| Duquesne Steel Works – Duquesne |
Rhone Poulenc Rorer Inc. – Collegeville |
| Duquesne Works – Duquesne |
Rich- Sampliner Knitting Mills Co. Conshohocken |
| Duquesne Works Oxygen Plant, Pump House Duquesne |
Richard Finishing Co. Inc. – Jerwyn |
| Duquesne Works Oxygen Plant, RIver Pump House Duquesne |
Richard Heckscher & Sons Swedeland |
| Duquesne Works Steel Works Duquesne |
Richardson Paint Co. – Philadelphia |
| Duraloy Co. – Scottsdale |
Richland Isd – Richland |
| Durham Public School – Philadelphia |
Richland Mall – Johnstown |
| Dutton Place Apartments Folsom |
Richland School District – Johnstown |
| Dutton Place Apts – Folsom |
Richland Senior High School – Johnstown |
| Dutton Place Apts Folsom |
Richland Shopping Center – Johnstown |
| Dyamite Noble Mountain Top Industrial Park – Mountain Top |
Richmond Generating Station Philadelphia |
| Dynamet Corp. Washington |
Richmond Power Plant – Philadelphia |
| Dynamic Metal Forming, Inc. – Koppel |
Richmond Radiator Co. – Uniontown |
| Dynamite Noble Mountain Top Ind Park – Mountain Top |
Richmond Station Crude Oil Facility Philadelphia |
| Dyna-Vac Power Cleaning of Buxmont Doylestown |
Richmond Works – Philadelphia |
| E Bergendahl Co. Philadelphia |
Rich-Sampliner Knitting Mills Co. – Connellsville |
| E Liberty Home Dressed Meat Co. – Pittsburgh |
Rico Realty Co. – Philadelphia |
| E Thompson Works Braddock |
Ridc Park – Blawnox |
| E. & G. Brooke Iron Co. – Birdsboro |
Ridc Park – Findlay Township |
| E. B. Leaf Co. – Philadelphia |
Riddle Memorial Hospital – Media |
| E. Bergendahl – Philadelphia |
Ridge Equipment Co. – Fallen Timber |
| E. C. Knight & Co. – Philadelphia |
Ridge per Products |
| E. D. Transfer – New Castle |
Ridgeway High School – Ridgeway |
| E. E. Austin Shipyards – Erie |
Ridley Township – Reading |
| E. F. Houghton & Co. – Philadelphia |
Rieck Mcjunkin Dairy Co. – Pittsburgh |
| E. G. Brooke Iron Co. Birdsboro |
Rigg & Reel – Parkersburg, WV |
| E. G. Brooke Iron Co. St. Peters |
Riggs Distiller & Co. – Lancaster |
| E. G. Budd Co. – Philadelphia |
Riggs Distiller Co. Lancaster |
| E. G. Budd Co. Philadelphia |
Riggs, Distler & Co. – North Wales |
| E. H. Aldrich Treatment Complex Elrama |
Rilet Stocker Corp. – Philadelphia |
| E. I. Dupont De Nemours & Co. Cornwellis Heights |
Riley Stoker – Cornwell Heights |
| E. I. Dupont De Nemours & Co. Gibbstown |
Riley Stoker Corp. – Philadelphia |
| E. I. Dupont De Nemours & Co. Hazelton |
Rimersburg Jr. – High School Rimersburg |
| E. I. Dupont De Nemours & Co. Philadelphia |
Rimersburg Junior High School – Rimersburg |
| E. I. Dupont De Nemours & Co. Towanda |
Ringtown Elementary School – Ringtown |
| E. I. Dupont De Nemours & Co. Twin Oaks |
Riter Conley Manufacturing Co. – Pittsburgh |
| E. I. Dupont De Nemours & Co. Washington |
Rittenhouse Apartments – Philadelphia |
| E. I. Weigland – Pittsburgh |
Rittenhouse C & Son – Quakertown |
| E. J. Lavino & Co. Marietta |
Rittenhouse Plaza – Philadelphia |
| E. J. Lavino & Co. Sheridan |
Rittman Process Corp – Pittsburgh |
| E. J. Lavino Co. Philadelphia |
Ritz Carlton Hotel – Philadelphia |
| E. J. Lavino Co. Plymouth Meeting |
RIver Pump House Duquesne |
| E. J. Lavino Co. Sheridan |
River Toad – McKees Rocks |
| E. J. Lavion & Co. – Marietta |
Riverside Tool & Dye – Latrobe |
| E. Keeler Co. Williamsport |
Riverview High School – Oakmont |
| E. L Rothschild Building – Philadelphia |
Riverview Home For The Aged – Philadelphia |
| E. L. Rothschild Building – Philadelphia |
Rl Miller – Enola |
| E. L. Rothschild Building Philadelphia |
Roadway Express Camp Hill |
| E. L. Weigland – Pittsburgh |
Roadway Express Harrisburg |
| E. M & W Ferguson – Pittsburgh |
Roaring Spring Paper Mill – Roaring Springs |
| E. M. & W. Ferguson – Pittsburgh |
Roaring Springs Paper Mill – Hollidaysburg |
| E. M. & W. Ferguson Pittsburgh |
Roaring Springs Power Station – Roaring Springs |
| E. N. Hyde Heating Co. – Pittsburgh |
Robert Chambers, Inc. Pittsburgh |
| E. N. Hyde Heating Co. Pittsburgh |
Robert H. Foerderer Philadelphia |
| E. S. Atkinson – Erie |
Robert Packer Hospital – Sayre |
| E. S. Atkinson Erie |
Robert S McQueen Philadelphia |
| E. S. Fox Div. Northeastern Lumber Co. Reading |
Robert Smith Ale Brewing Co. – Philadelphia |
| E. T. Edwards – Columbia |
Robert Welch Trucking White Mills |
| E. T. Edwards Columbia |
Robert Wooler Co. – Dressher |
| E. T. Stotesbury Residence – Philadelphia |
Robertshaw Controls – New Stanton |
| E. W. Bliss – Midland |
Robertshaw Controls – Youngwood |
| E. W. Bliss Co. Midland |
Robertson- American Corp. A Morrisville |
| E. W. Bliss CO. Pittsburgh |
Robertson Fuel Oil – Linwood |
| Eager Beaver Lumber Yard – Townsville |
Robesonia Iron Co. Limited – Robesonia |
| Eagle Hill Colliery – Port Carbon |
Robesonia Iron Co. Limited Robesonia, Berks County |
| Eagles Club – Franklin |
Robesonia Iron Co. Robesonia |
| Earbeu Harding & Co. – Philadelphia |
Robina Mine – Fordyce |
| Eastern Affiliated Services Corp. – Easton |
Robindale Near Seward |
| Eastern Affiliated Services Corp. |
Robinson & Rea Manufacturing Co. – Pittsburgh |
| Eastern Asphalt Co. – Philadelphia |
Robinson & Wallace – Philadelphia |
| Eastern Foundry Co. – Boyertown |
Robinson Clay Products Co. – Pottstown |
| Eastern Foundry Co. Hovertown |
Robinson Industries – Zelienople |
| Eastern Gunite Corp. – Bala Cynwyd |
Robinson Protected Metal Co. – Ceiling – Pittsburgh |
| Eastern Hydraulic Press Brick Co. – Philadelphia |
Robinson Ventilating Co. – Zeleinople |
| Eastern Industrial Insulation – Allentown |
Robinson Wall Covering – Titusville |
| Eastern Industrial Insulation Co. – Reading |
Roch Pittsburgh Coal Homer City |
| Eastern Mercy Health Systems – Pittsburgh |
Rochester & Pittsburgh Coal & Iron Co. Dubois |
| Eastern Penn Psychiatric Institute – Philadelphia |
Rochester & Pittsburgh Coal & Iron Co. Eleanor Shaft Mine |
| Eastern Pennsylvania Power Co. – Easton |
Rochester & Pittsburgh Coal & Iron Co. Falls Creek |
| Eastern Pennsylvania Railways Co. – Palo Alto |
Rochester & Pittsburgh Coal & Iron Co. Helvetia |
| Eastern Pennsylvania Railways Co. Pottsville |
Rochester & Pittsburgh Coal & Iron Co. Lucerne |
| Eastern Star Home – Bellevue |
Rochester & Pittsburgh Coal & Iron Co. Punxsutawney |
| Eastern State School – Langehorne |
Rochester General Hospital – Rochester |
| Eastern Steel Co. – Pottsville |
Rochester High School Rochester |
| Eastern Westmoreland Vo Tech – Westmoreland |
Rochester Pittsburgh Coal Co. Indiana |
| Easton Gas & Electric Co. – Easton |
Rochester Pittsburgh Coal Indiana County |
| Easton High School – Easton |
Rochester Plant – Rochester |
| Easton Hospital Easton |
Rochester Power Plant Lucerne Mines |
| Easton Shopping Center – Easton |
Rochez Brothers & Supply Co. – Braddock |
| Eat N Park – Mt. Pleasant |
Rock Tenn Co. – Delaware City |
| Eat-N-Park – New Castle |
Rock Tenn Co. Delaware Water Gap |
| Eaton Corp. – Beaver |
Rockbuilt – Sharpsburg |
| Eaton Corp. – Philadelphia |
Rockhill Iron & Coal Co. – Orbisonia |
| Ebensburg Coal Co. – Colver |
Rockhill Iron & Coal Co. Robertsdale |
| Ebensburg Light, Heat & Power Co. – Ebenburg |
Rockpoint Sand Co. of Pittsburgh Ellwood Junction |
| Ebensburg Office – Ebensburg |
Rockwell Industries – Reading |
| Ebensburg State Hospital – Ebensburg |
Rockwell International New Castle |
| Ebensburg Vo- Tech – Ebensburg |
Roebling Steel – Levittown |
| Ebensburg Water Station – Ebensburg |
Rogers Brothers Corp. – Albion |
| Eberhard Faber Pencil Co. – Mountaintop |
Rohm & Haas Chemical – Bridesburg |
| Eberle Tanning Co. |
Rohm & Haas Chemical Co. – Philadelphia |
| Econolodge – Levittown |
Rohm & Haas Chemical Plant – Chester |
| Economy Sauer Chatham Center – Pittsburgh |
Rohm & Haas Chemical Plant – Philadelphia |
| Eddystone Generating Station Crum Creek |
Rohm & Haas Chemicals, LLC Briston |
| Eddystone Generating Station Eddystone |
Rohm & Haas Co. Bristol |
| Eddystone Manufacturing Co. – Eddystone |
Rohm & Haas Co. Philadelphia |
| Eddystone Power Station – Philadelphia |
Rohm & Haas Powder Coatings Plant – Reading |
| Eddystone Powerhouse – Eddystone |
Rohm & Hass Chemical – Bristol |
| Eddystone Steel North Eddystone |
Rohm Antl Baas Co. – Philadelphia |
| Edensburg Coal Co. Colver |
Rohm Haas Chem Corp. Bridesburg |
| Edensburg Power Ebensburg |
Rohm Haas Chem Corp. Philadelphia |
| Edgar Thompson Steel Works – Bessemer |
Rohm Haas Chemical Spring House |
| Edgar Thompson Works – Braddock |
Rohm Haas Co. Bristol |
| Edgar Thomson Works Braddock |
Rohm Haas Co. Building 36 Philadelphia |
| Edgar Thomson Works Braddock, Penn. Bessemer |
Rohm Haas Co. Philadelphia |
| Edgecomb Steel – Philadelphia |
Rohm Hass Co. Bristol |
| Edgewater Corp. – Oakmont |
Rohm Hass Co. Philadelphia |
| Edgewater Corp. – Pittsburgh |
Rohn & Haas Chemical Co. – Philadelphia |
| Edgewater Steel Co. Allegheny County |
Rojac Industries – Pittsburgh |
| Edgewater Steel Co. Oakmont |
Rolle Manufacturing Co. – Lansdale |
| Edgewater Steel Co. Pittsburgh |
Rolling Rock Brewery – Latrobe |
| Edgewater Steel Co. Verona |
Roman Catholic Protectory Montgomery County – Flatlands |
| Edgewater Steel Oakmont |
Ronco |
| Edgewood Country Club – Johnstown |
Roosevelt Hotel – Pittsburgh |
| Edgewood Mill – Shamokin |
Rorborough Chestnut Hill & Morristown Railway Co. – Philadelphia |
| Edinboro University – Edinboro |
Rorer Group, Inc. – Montgomery County |
| Edison & Illuminating Co. – Hazleton |
Rosedale Coke Plant – Johnstown |
| Edison Electric Illuminating Co. – Altoona |
Rosedale Foundry – Rosedale |
| Edison Electric Illuminating Co. Bellefonte |
Rosedale Foundry & Machine Co. Pittsburgh |
| Edison Electric Illuminating Co. Chester |
Rosedale Knitting Mills – PA |
| Edison Electric Illuminating Co. Hazelton |
Rosedale Knitting Mills – Reading |
| Edison Electric Illuminating Co. Lancaster |
Rosena Furnace – New Castle |
| Edison Electric Illuminating Co. Mt Carmel |
Rosena Furnace New Castle |
| Edison Electric Illuminating Co. Shamokin |
Rossiter, McGovern & Co. – Pittsburgh |
| Edison Electric Illuminating Co. Sunbury |
Rosslyn Farms School – Carnegie |
| Edison Electric Light Co. – Philadelphia |
RosTraver School – Rostraver |
| Edison Electric Light Co. York |
Rothrock Dealership – Allentown |
| Edison Heating Plant Unit 3 Philadelphia |
Rotoblast – Butler |
| Edison International Homer City |
Round House – Sharpsburg |
| Edison Light & Power Co. – York |
Route 119 Road & Bridge |
| Edison Light Co. – Middletown |
Roxborough Chestnut Hill & Morristown Railway – Shawmut Station |
| Edison Mission Energy Homer City |
Roxborough Hospital – Philadelphia |
| Edison Steam Plant 9Th Sansom Philadelphia |
Roxborough Memorial Hospital – Philadelphia |
| Edith Furnace Allegheny |
Royal Swan Inc. General Ribbon Mills, Inc. Catasauqua |
| Edw. Harrington Son & Co. – Philadelphia |
Royston Laboratories – Blawnox |
| Edward Fay & Son – Philadelphia |
Rozman – Pittsburgh |
| Edward G. Budd Manufacturing Co. – Philadelphia |
Rps – Moon Township |
| Edward Spohrer – Pittston |
Rubber Co. Rolls, Inc. Meadowlands |
| Edwin Harrington Son & Co. – Philadelphia |
Rubel – Erie |
| Ehret Magnesia Manufacturing Co. – Port Kennedy |
Ruffs Dale |
| Einstein Medical Center – Philadelphia |
Run Allegheny |
| Eisenhower Apartments – Reading |
Rural Valley Elementary School – Rural Valley |
| El Rama Power Station – Elrama |
Rush Boiler Co. – Midland |
| El Rama Power Station – Monaca |
Russell Mill Rochester |
| Eleanor Shaft Mine |
Russell Standard – Bridgeville |
| Electra Products Co. Lansdale |
Russian American Manufacturing Co. Philadelphia |
| Electralloy Corp. Oil City |
Russian American Manufacturing Co. Pittsburgh |
| Electric & Gas – Dubois |
Russian Orthodox Church – Charleroi |
| Electric Auto-Lite Co. – Hazleton |
Rust Boiler Co. Midland |
| Electric Co. Of America Land Title Building – Philadelphia |
Rust Engineering Co. Pittsburgh |
| Electric Light Department – Lansdale |
Rust Furnace Co. Pittsburgh |
| Electric Power Station – Nanticoke |
Ruth Bennett Project – Chester |
| Electric Storage Battery Co. – Philadelphia |
Ryan Homes – Robinson |
| Electric Traction Co. – Philadelphia |
Ryder & Richmond Oil Co. – Bradford |
| Electricians Union – Local 98 (I.B.E.W.) – Philadelphia |
Ryerson Station – Ryerson Station |
| Electro Alloy Corp. – Oil City |
Rymet Corp. King of Prussia |
| Electro Chemicals – Emmaus |
S Faith Co. – Philadelphia |
| Electrotherm Corp. Philadelphia |
S M S Automotive – Philadelphia |
| Elementis Pigments, Inc. – Easton |
S Morgan Smith Co. – York |
| Elenger Ind. – Moscow |
S S Marvin Branch – Pittsburgh |
| Elenger Industries Moscow |
S. Bern Ohio Co. – Rouseville |
| Eliza Furnace Plant – Pittsburgh |
S. Ewart & Co. – Pittsburgh |
| Eliza Pipe Shop – McKees Rocks |
S. F. Whitman Philadelphia |
| Elizabeth Dam – Elizabeth |
S. F. Whitman Son – Philadelphia |
| Elizabeth Elementary School – Elizabeth |
S. F. Whitman Son Philadelphia |
| Elizabeth Sewage Treatment Plant – Elizabeth |
S. Faith & Co. – Philadelphia |
| Elizabeth Steel Magee Hospital – Pittsburgh |
S. I. P, Inc. – Parsons Chemical Engineer, Inc. |
| Elizabeth Township Municipal – Elizabeth |
S. J. Shimer & Sons – Milton |
| Eljer Co – Ford City |
S. J. Shimer & Sons Milton |
| Eljer Manufacturing – Ford City |
S. Jarvis Adams Co – Midland |
| Eljer Plumbing Ware Corp. – Ford City |
S. K. F. Industries Inc. Philadelphia |
| Elk County General Hospital – Ridgeway |
S. Lancaster Co School Authority- New Sr High School – Quarryville |
| Elk Creek Station – Erie |
S. MArgolis Co. Philadelphia |
| Elk Tanning Co. – Coudersport |
S. Morgan Smith Co. – York |
| Elk Tanning Co. Curwensville |
S. S. African Planet Ship |
| Elkland Leather Co. – Elkland |
S. S. Atlantic Engineering Chester |
| Ellectralloy Corp. Oil City |
S. S. Atlantic Navigator Chester |
| Elliot Co. – Indiana |
S. S. Ektor Philadelphia |
| Elliot Co. – Ridgway |
S. S. Esso Jamestown Chester |
| Elliot Co. Division of Carrier Jeanette |
S. S. Globe Progress Philadelphia |
| Elliot Philadelphia |
S. S. Gulf Hollander Philadelphia |
| Elliot Steel Co. – Jeannette |
S. S. Gulf Lube Girard Point |
| Elliott Co. – Accoustical Lab – Ridgway |
S. S. Hills Chester |
| Elliott Co. Ridgway |
S. S. Illapel Chester |
| Elliott Turbomachinery Co. Inc. – Jeannette |
S. S. Ly Kaion Philadelphia |
| Ellis – Philadelphia |
S. S. Mercantile Wave. Chester |
| Ellis School – Pittsburgh |
S. S. Midland Philadelphia |
| EllisCo. Bala Cynwyd |
S. S. Mobil Aero Chester |
| Ellsworth Coal Co. – Cokeburg |
S. S. Olympic Chester |
| Ellsworth Coal Co. Ellsworth |
S. S. Olympic Rock Chester |
| Ellsworth Collieries Co. – Ellsworth |
S. S. Olympic Rock Philadelphia |
| Ellwood City Forge Corp. – Ellwood City |
S. S. Olympic Storing Chester |
| Ellwood City Hospital – Ellwood City |
S. S. Robin Sherwood Philadelphia |
| Ellwood Elementary, 13Th Oak Lane Philadelphia |
S. S. Sister Katingo Chester |
| Ellwood Tube Ellwood City |
S. W. Grease & Oil – Bakerstown |
| Elrama Power Plant – Elrama |
S. W. Grease & Oil |
| Elrama Power Plant – Pittsburgh |
S.S. African Planet (Ship) – Bethlehem |
| Elrama Power Station Washington County Elrama |
S.S. Atlantic Eng. – Chester |
| Elwood City Forge Ellwood City |
S.S. Atlantic Navigator – Chester |
| Elwyn Training School – Elwyn |
S.S. Esso Jamestown – Chester |
| Embreeville State Hospital Embreeville |
S.S. Gulf Lube – Girard Point |
| Emlenton Refining Co. – Emlenton |
S.S. Hills – Chester |
| Empire Building – Pittsburgh |
S.S. Illapel – Chester |
| Empire Iron & Steel Co – Mackungie |
S.S. Marvin Branch – Pittsburgh |
| Empire Iron & Steel Co. – Catasauqua |
S.S. Mercantile Wave – Chester |
| Empire Mills – Philadelphia |
S.S. Mobil Aero – Chester |
| Empire Reeves Steel Corp. – Pittsburgh |
S.S. Olympic – Chester |
| Empire Steel Products – Temple |
S.S. Olympic Rock – Chester |
| Employment Security Office – Chester |
S.S. Richfield – Chester |
| Enamel Products & Plating Co. – McKeesport |
S.S. Sister Katingo – Chester |
| Enameled Metals – Etna |
Saba Power Farouqabad |
| End Coal Co. – Lee |
Sabins Manufacturing Co. – Versailles |
| End Coal Co. Scranton |
Sachenmair – Holmesburg |
| End Electric Light Co. – Liberty |
Sacred Heart Church – Jeanette |
| End Electric Light Co. Pittsburgh |
Sacred Heart Hospital – Allentown |
| End Heating & Energy Co. – Philadelphia |
Saegertown Manufacturing Co. – Saegertown |
| End Light Co. – Pittsburgh |
Safe Harbor Water Power Corp. – Safe Harbor |
| End Rolling Mill Co. – Lebanon |
Safety Armorite Conduit Co. Pittsburg |
| Eng Research Bld 19 Test Coil – York |
Safety Equipment Co. – Connellsville |
| Engineering Co. |
Saint Agnes Hospital – Philadelphia |
| Engr Annex – Pittsburgh |
Saint Ignatius Church – Yardley |
| Enterprise Galvanizing – Philadelphia |
Saint Joe’s Lead Monacca |
| Enterprise Transit Co. – Chaffee |
Saint Johns Church – Delmont |
| Episcopal Hospital – Philadelphia |
Saint Joseph’s School – Norristown |
| Epsilon Zeta Alumni Association – Philadelphia |
Saint Marys Church – Glenshaw |
| Equibank – Clairton |
Saint Paul’s Church – Philadelphia |
| Equipment Engineering Co. – Pittsburgh |
Salem Brosius Inc. – Carnegie |
| Equitable Gas Allegheny Center |
Salem Brosius Inc. Pittsburgh |
| Equitable Gas Co – Elrama |
Salem Park Townhomes – Mechanicsburg |
| Equitable Gas Energy Co. – Pittsburgh |
Salisbury School – Salisbury |
| Equitable Gas Energy Co. Waynesburg |
Salk Hall – University of Pittsburgh – Pittsburgh |
| Equitable Gas Steam Heating Co. – Pittsburgh |
Sall Geo Metals Co. – Philadelphia |
| Equitable Ill Gas Light Co. – Philadelphia |
Salvucci Engineering Pittsburgh |
| Equitable Illuminating Gas Light Co. – Philadelphia |
Sam Jacks Condominium – Indiana |
| Equitable Life Assurance Society – Pittsburgh |
Sam Liberto Ford – Jeannette |
| Equitable Life Assurance Society Gateway Center – Pittsburgh |
Samaritan Hospital – Philadelphia |
| Erben Harding Co. – Philadelphia |
Sampenn Co. Baltimore, MD |
| Erben, Harding & Co. – Philadelphia |
Samueal Rea Car Shop – Holidaysburg |
| Erben, Harding & Co. Tacony |
Samuel Haight & Co. Bridgewater |
| Eric C Holzer Chester |
Samuel Rea Car Shop – Hollidaysburg |
| Eric City Ironworks – Erie |
San Juan Cement Co. Vega Alta |
| Eric Forge & Steel – Erie |
Sandusky Cement Co. – York |
| Erie Cambridge Union & Corry Railway Co. – Mill Village |
Sandusky Foundry |
| Erie Car Works, Limited – Erie |
Sandusky Foundry Hazelton |
| Erie City Energy Division Erie |
Sani Dairy – Johnstown |
| Erie City Ironworks – Erie |
Sanitary Milk Co. Curwensville |
| Erie Coke Co. – Erie |
Sans Corp. – Erie |
| Erie County Courthouse – Erie |
Santa Elena – Chester |
| Erie County Electric Co. – Erie |
Satellite Alloy Corp. – Springdale |
| Erie Electric Motor Co. – Erie |
Saucon – S. Bethlehem |
| Erie Fish Co. Erie |
Saucon Plant – Bethlehem |
| Erie Forge & Steel Co. – Erie |
Saugatuck – Chester |
| Erie Forge Steel Erie |
Sauquoit Silk Co. – Scranton |
| Erie Industrial Insulation – McKean |
Savage Arms Corp. – Sharon |
| Erie Lackawanna Railroad Pennsylvania State Police Kingston |
Savage Arms Corp. Philadelphia |
| Erie Lackawanna Railroad Public Siding Kingston |
Savoia Property Management Co. – Norwood |
| Erie Lackawanna Railroad Team Track Kingston |
Saw Hill Tube Division |
| Erie Lighting Co. – Erie |
Saw Hill Tubular Sharon |
| Erie Malebus Iron – Erie |
Sawhill Armco Ak Steel – Sharon |
| Erie Marine – Erie |
Sawhill Tubular Sharon |
| Erie Railroad Co. Dunmore |
Sawhill Tubular Wheatland |
| Erie Railroad Co. Meadville |
Saxonburg Sintering Plaint – Saxonburg |
| Erie Railroad Co. Susquehanna |
Saxonburg Sintering Plant |
| Erie Works – Erie |
Saxton Iron Co. – Saxton |
| Erie Works Power Plant Erie |
Sayre Electric Co. – Sayre |
| Erwin Plumbing – Philadelphia |
Sayre |
| Es Magee Hospital – Pittsburgh |
Says Garage Harrisville |
| Esab Co. Hanover |
Scaife Co. – Oakmont |
| Esab CO. York |
Scan Chester |
| Esquire Cleaners & Laundry – Pennsylvania Ave. |
Sch Authority New Sr High School Quarryville |
| Essington Co. |
Schaaf Heating & Air Conditioning – Greensburg |
| Esso Corp. Exxon – Lawrenceville |
Schaefer Brewery – Philadelphia |
| Esso Standard Oil Co. – Pittsburgh |
Schaeffer Brewery – Fogelsville |
| Est Of James Lord Jr. – Philadelphia |
Scharff Equipment Co. Philadelphia |
| Estate Of H.W. Oliver – Pittsburgh |
Scheie Eye Hospital – Philadelphia |
| Estate Of Henry W. Oliver – Pittsburgh |
Schendis Ferry |
| Estate Of James Lord Jr. – Philadelphia |
Schenley Distillers Corp. – Schenley |
| Estate Of Stephen Greene – Philadelphia |
Schiable’s Bakery Easton |
| Estate Of William Weightman – Philadelphia |
Schick Inc. – Lancaster |
| Eterno Asbestos Lumber & Shingle Co. – Redington |
Schmidt & Ault Paper Co. – York |
| Ethel Corp. – Pasadena |
Schmidt Lumber Millwork – Scranton |
| Eureka #30 – Scalp Level |
Schoen Pressed Steel Co. – Pittsburgh |
| Eureka #7 – Beulah |
Schoen Pressed Steel Co. Allegheny City |
| Eureka Colliery #35 – Wison |
Schoen Pressed Steel Co. Pittsburgh |
| Eureka Div Of Litton Ind – Dunmore |
Schoen Steel Wheel Co. McKees Rocks |
| Eureka Limestone Tank Insulation Philadelphia |
Schoen Steel Wheel Co. Pittsburgh |
| Eureka Specialty Co. Scranton |
Schoeneck Farms Inc. Nazareth |
| Eureka Stone Quarry Inc. Bucks County |
School – Chestnut Hill |
| Eureka Stone Quarry Inc. Chalfont |
School Authority- New Sr High School |
| Eureka Stone Quarry Inc. Eureka |
School Chestnut Hill |
| Eureka Stone Quarry Inc. Tank Insulation Philadelphia |
School District of Philadelphia – Philadelphia |
| Evangelical Community Hospital – Lewisburg |
School Exceptional Children – Robinson Township |
| Evanray Car Wash – Natrona Heights |
School Selingrove Center – Selinsgrove |
| Evans Colliery Co. – Hazleton |
SchoolChurches – Altoona |
| Evans Memorial – Philadelphia |
Schooley Colliery – Dunmore |
| Everets & Overdeer – Lancaster |
Schools & Churches – Altoona |
| Evergreen Nursing Home Center – Harmony |
Schoot Optical Duryea |
| Everts & Oerdeer, Inc. – Lancaster |
Schroeder Manufacturing Co. – McKees Rocks |
| Ew Bowman Inc. Uniontown |
Schulylkill Station – Philadelphia |
| Ewen Breaker – Pittston |
Schutte & Koerting Co. Cornwells, Bucks County |
| Excelsior Brass Reading |
Schutte & Koerting Co. Philadelphia |
| Excelsior Coal Co. – Excelsior |
Schutte Koerting Company Cornwells Heights |
| Excelsior Steam Planning Mill – Mauch Chunk |
Schutte Koerting Cornwell Heights |
| Exchange Building – Philadelphia |
Schuykill Forge Co. Cornwells Heights |
| Exelon Generation Co. – Philadelphia |
Schuylkill Arsenal Property – Philadelphia |
| Exelon Power – Eddystone |
Schuylkill Forge Co. – Cornwell Heights |
| Exelon Power Phoenixville |
Schuylkill Forge Co. Philadelphia |
| Exeter Colliery – Pittston |
Schuylkill Products Inc. Cressona |
| Exeter High School – Exeter |
Schuylkill Railway Co. – Girardville |
| Exeter Machine Works – Pittston |
Schuylkill Station – Philadelphia |
| Exeter Power Co. – Pittston |
Schuylkill Valley Traction Co. – Philadelphia |
| Exide Battery Co. – Philadelphia |
Schwenkfelder Church – Worcester |
| Exide Battery Philadelphia |
Scofield Engineering Co. – Philadelphia |
| Exotic Metals – Ridgway |
Scofield, Mason & Co. – Philadelphia |
| Exton Mall – Exton |
Scotland School For Vets – Scotland |
| Extrusion Die Makers Murrysville |
Scott Colliery – Mt. Carmel |
| F & M Schaefer Brewing Co. – Trexlertown |
Scott Foam – Eddystone |
| F Miller Spring & Manufacturing Co. – Pittsburgh |
Scott Paper – Paper Machine Nbr 13, 18 Chester |
| F. & M. Schaefer Brewing Co. |
Scott Paper Co. – Chester |
| F. A. French & Sons – Latrobe |
Scott Paper Co. Eddystone |
| F. A. Pavlick – Fairless Hills |
Scott Paper Co. Front Market |
| F. A. Poth & Sons – Philadelphia |
Scott Paper Co. Philadelphia |
| F. A. Poth Brewing Co. – Philadelphia |
Scott Paper Co. Research & Development Center – Essington |
| F. B Wright Co. Pittsburgh |
Scott Paper Mill – Chester |
| F. B. Wright Co. – Bridgeville |
Scott Township Elementary School Scott Twp |
| F. C Roberts & Co. Engineers – Philadelphia |
Scottdale Furnace Co. Scottdale |
| F. F. Geisler & Co. – Pittsburgh |
Scottdale Iron & Steel Co. – Scottsdale |
| F. G. Vogt & Sons – Philadelphia |
Scottdale Machine Foundry Construction Co. Scottdale |
| F. H. Kalbfleisch Corp. – Erie |
Scottdale Wood Products Co. – Scottsdale |
| F. M. Schaefer Brewing Co. Trexlertown |
Scottsdale Furnace Co. – Scottsdale |
| F. Miller Spring & Manufacturing Co. – Pittsburgh |
Scranton Anthracite Briquette Co. – Dickson |
| F. R. Dravo & Co. – Pittsburgh |
Scranton Anthracite Briquette Co. Scranton |
| F. W Darlington C.E. – Philadelphia |
Scranton Axle & Spring Co. – Scranton |
| F. W. Tunnell Glue Manufacturing – Philadelphia |
Scranton Bolt & Nut Co. – Scranton |
| Fabricating Engineering, Inc. York |
Scranton Electric Co. – Pittston |
| Fairhill Apartments – Philadelphia |
Scranton Electric Construction Co. Scranton |
| Fairless Hills Steel Mill – Morrisville |
Scranton Gas & Water Co. – Forest City |
| Fairless Steel – Fairless Hills |
Scranton Gas & Water Co. Scranton |
| Fairless Works #2 Continuous Annealing Line Morrisville |
Scranton High School Scranton |
| Fairless Works Us Steel – Fairless Hills |
Scranton Lace Curtain Co. Scranton |
| Fairmoint Wooster Mills – Philadelphia |
Scranton Ordinance Division Scranton |
| Fairmont Foundry, Inc. Hamburg |
Scranton Railway Co. – Scranton |
| Fairmont Passenger Railroad Co. |
Scranton Technical High School – Scranton |
| Fairmont Supply Co. – Washington |
Scrap Philadelphia |
| Fairmount Construction Co. – Philadelphia |
Scraton Ordinance Division – Scranton |
| Fairmount Park Commission – Philadelphia |
Scrubgrass Power Plant – Scrubgrass |
| Fairmount Park Transportation Co. – Philadelphia |
Seaboard Container Corp. – Bristol |
| Fairview School – Fairview |
Seaboard Steel & Manganese Corp. – Temple |
| Fairview State Prison – Scranton |
Seaboard Steel Manganese Temple |
| Falcon Club – New Castle |
Sealtest Foods – Philadelphia |
| Falcon Equipment Co. New Brighton |
Seanor Coal Co. Saltsburg |
| Fanny Farmers Candy Manufacturing – Harrisburg |
Sears & Roebuck Allentown |
| Farentum Borough – Tarentum |
Sears & Roebuck Ambridge |
| Farm Show Building – Harrisburg |
Sears & Roebuck Mifflin |
| Farmers Cheese Co. New Wilmington |
Sears & Roebuck Philadelphia |
| Farmers Cheese New Wilmington |
Sears & Roebuck Store – Lancaster Pike |
| Farmers Deposit National Bank Building – Pittsburgh |
Sears Beaver Valley Mall Beaver |
| Farrell Steel Works & Furnaces – Farrell |
Sears Indiana |
| Farview State Hospital – Waymart |
Sears Roebuck Co. – Allentown |
| Fast & Friendly Monaca |
Sears Roebuck Store – Lancaster Pike – Reading |
| Faust Distillery – Glen Rock |
Sears, Roebuck & Co. – Philadelphia |
| Fawcus Machine Co. – Ford City |
Seco Warwick – Meadville |
| Fayette City – Newell |
Second National Bank – Pittsburgh |
| Fayette Manufacturing Co. – Chester |
Security Investment Co. – Trafford City |
| Fayette R. Plumb Co. – Philadelphia |
Seiferts Bakery – Newton |
| Fazekas Frank Easton |
Selas Corp. of America Bethlehem |
| Federal Container Co. – Philadelphia |
Selas Corp. of America Dresher |
| Federal Enameling & Stamping Co. – McKees Rocks |
Selden Co. – Bridgeville |
| Federal Laboratories Inc. Saltsburg |
Selden Co. End, Pittsburgh |
| Federal Office Building Courthouse Philadelphia |
Selinsgrove Center School |
| Federal Office Building Pittsburgh |
Selinsgrove Center School – Selinsgrove |
| Federal Paper – Arden |
Selinsgrove State School – Selinsgrove |
| Federal Paper Board Co. Inc. Paper Board Division Reading |
Semet Solvay Co. – Johnstown |
| Federal Savings Bank – Ardmore |
Semet- Solvay Co. Caubria Steel Co. Johnstown |
| Federal Shipbuilding & Dry Dock Co. of Us Pittsburgh |
Semet- Solvay Co. Dunbar |
| Federal Steel Foundry Co. – Chester |
Semet-Solvay Co. Cambria Steel Co. – Johnstown |
| Federal Street Freight Station Philadelphia |
Seneca Colliery Pittston Junction |
| Feita Corp. – Philadelphia |
Seneca Power Station – Kinzua |
| Felins Meat Packing – Philadelphia |
Seneca Valley High School – Seneca Valley |
| Fels & Co. – Philadelphia |
Senior High School – Chester |
| Fels Naptha Soap Co. – Philadelphia |
Senior High School Building – Philadelphia |
| Fels Soap Co. – Philadelphia |
Sensus Technologies – Uniontown |
| Fenestra Inc. Erie |
Septa – Philadelphia |
| Ferro Corp. Bigler |
Septa Powerhouse Philadelphia |
| Ferro Corp. Erie |
Sercon Corp. Pittsburgh |
| Ferro Corp. Hazelton |
Sergeant Electric Co. Pittsburgh |
| Ferrows Chemical Co. – Pittsburgh |
Sersteel Corp. Pittsburg |
| Fetteroff Coal Co. – Somerset |
SES Station Martins Creek |
| FH McGraw & Co. Philadelphia |
Sewage Disposal Plant – Philadelphia |
| Fiancisco Sugar Co. – Philadelphia |
Sewage Disposal Plant Tyrone |
| Fibrous Glass Products – Mountain Top |
Sewage Treatment Plant – Bethel Park |
| Fidelity Bank Building – Philadelphia |
Sewage Treatment Plant – Donora |
| Fidelity Insurance Trust & Safety Deposit Co. – Philadelphia |
Sewage Treatment Plant – Library |
| Fidelity Mutual Life Association – Philadelphia |
Sewage Treatment Plant – Lock Haven |
| Fidelity Mutual Life Insurance Co. – Philadelphia |
Sewage Treatment Plant – Mifflin |
| Fike Dairy Uniontown |
Sewage Treatment Plant – Muncy |
| Filtration Plant – Reading |
Seward Power Plant – Johnstown |
| Finance Building Capitol Complex – Harrisburg |
Seward Power Station Seward |
| Findlay Refractories Co. Washington |
Seward Public School – Seward |
| Finley Township Water Pump Station – Finley Township |
Sewickley Academy – Sewickley |
| Finnaren & Haley Paint – Connellsville |
Sewickley High School – Sewickley |
| Finnaren Haley Paint Conshohocken |
Sewickley Valley Hospital – Sewickley |
| Fionesta Valley Chemical Co. – Mayburg |
Sfk Industries, Inc. – Philadelphia |
| Fire Department Repair Shop – Philadelphia |
Sfk Industries, Inc. Sunnytown Pike |
| Fire Hall – McMurray |
Sgl Abrasives – Carlisle |
| Fire Inc. Pittsburgh |
Shady Grove School – Montgomery County |
| Firestone Plastics Plant Pottstown |
Shadyside Boys Club – Shadyside |
| Firestone Recapping Center – Scranton |
Shafer Block – Somerset |
| Firestone Retread Shop – Murrysville |
Shaft 2 Irwin |
| Firestone Tire & Chemical Plant – Pottstown |
Shaler High School, Shaler Township – Glenshaw |
| Firestone Tire & Rubber Co. – Philadelphia |
Shaler Jr. High School – Glenshaw |
| Firestone Tire & Rubber Co. Pottstown |
Shaler Township Garage – Glenshaw |
| First Baptist Church – Sharon |
Shallcross School – Philadelphia |
| First Energy Nuclear Operating Co. – Shippensburg |
Shamokin & Coal Township Light, Heat & Power Co. – Shamokin |
| First Federal Savings & Loan – Sharon |
Shamokin Dam – Selinsgrove |
| First National Bank – Allentown |
Shamokin Dam – Sunberry |
| First National Bank Building Allentown |
Shamokin Light Heat & Power Co. – Shamokin |
| First National Bank Building Charleroi |
Shanago Steel – Pittsburgh |
| First National Bank Building Pittsburgh |
Sharon Coke Co. Masontown |
| First Pennsylvania Banking Trust Building Philadelphia |
Sharon Coke Co. Pittsburgh |
| First Presbyterian Church – Morrisville |
Sharon Coke Co. Runco |
| First Sterling Steel Mill – McKeesport |
Sharon Coke Co. Sharon |
| Firstenergy Nuclear Operating Co. Shippingport |
Sharon High School – Sharon |
| Firth Sterling Steel Co. – McKeesport |
Sharon Iron Co. Sharon |
| Firth-Sterling Inc. Pittsburgh |
Sharon Steel Corp. Farrell |
| Firth-Sterling Steel Co. – Dremmler |
Sharon Steel Farrell Works Oxygen Plant Farrell |
| Firth-Sterling Steel Co. McKeesport |
Sharon Steel Hoop Co. – Pittsburgh |
| Fischer Porter – Warminster |
Sharon Steel Hoop Co. Sharon |
| Fisher Body – Mifflin |
Sharon Steel Monessen |
| Fisher Body Corp. – Fleetwood |
Sharon Transformer Plant Boiler House Sharon |
| Fisher Body Corp. Div. of General Motors Fleetwood |
Sharon Tube Co. – Sharon |
| Fisher Scientific – Indiana |
Sharon Water Works Co. – Sharon |
| Fisher Scientific Co. Pittsburgh |
Sharpless & Sons – Philadelphia |
| Fishers Big Wheel – Natrona Heights |
Sharpsville Furnace Co. – Sharpsville |
| Fishers Big Wheel Stores – New Castle |
Sharpsville Roofing Sharpsville |
| Fitzpatrick Sheetmetal – Dubois |
Shaw Avenue School – Clairton |
| Fitzsimmons Junior High School – Philadelphia |
Shaw Walker – Green Tree |
| Flack Bros Inc. – Harrisburg |
Shawville Generating Station Units 3, 4 Shawville |
| Flack Bros Inc. Harrisburg |
Shawville Power Station – Clearfield |
| Flagg, Stanley G. & Co. – Pottstown |
Shawville Powerhouse Clearfield |
| Flannery Bolt Co. – Bridgeville |
Sheesley Construction Johnstown |
| Flavor- Rite Trucking Co. Pittsburgh |
Sheetmetal Workers Union – Local 19 – Philadelphia |
| Fleetwood Metal Body Co. – Fleetwood |
Shelbe & Fisher, Fairmount Fork Works – Philadelphia |
| Fleischer Mills – Philadelphia |
Shelby Steel Tube Co. – Ellwood City |
| Flexi- Patch Co. |
Shelby Steel Tube Co. Greenville |
| Flinn Dreffein York |
Shellby Steel Tube Co. – Pittsburgh |
| Flood City Brass Pump – Johnstown |
Shelly Brothers Inc. – Lansdale |
| Floor Chemical Corp. Philadelphia |
Shelly Brothers Inc. Lansdale |
| Floor Plant Building 500 – Lancaster |
Shelocta Power Station – Shelocta |
| Florig Equipment Co. Conshohocken |
Shelocta Powerhouse Johnstown |
| FMC – Calmar |
Shenago Steel Pittsburgh |
| FMC – Meadville |
Shenandoah Chester |
| FMC Corp. Colmar |
Shenango China Co. – New Castle |
| FMC Corp. Kennett Square |
Shenango Coke Batteries – Neville Island |
| Fmc Corp., American Viscose Corp. – Meadville |
Shenango Furnace Co. – Sharpsville |
| Fogelsville Plant – Allentown |
Shenango Furnace Co. Wilpen |
| Fogelsville Plant Young Building Fogelsville |
Shenango Inc. – Pittsburgh |
| Follansbee Brothers Co. – Pittsburgh |
Shenango Inc. Davison Coke Iron Pittsburgh |
| Folwell Bros. & John Bromley Sons – Philadelphia |
Shenango Inc. Pittsburgh |
| Food Distribution Center – Philadelphia |
Shenango Mall – Sharon |
| Food Fair Philadelphia |
Shenango Pottery Co. – New Castle |
| Food Fair Store Warehouse Philadelphia |
Shenango Presbyterian Home – New Wilmington |
| Foodland Store – Bridgeville |
Shenango Steel – Nequehoning |
| Foodland Store – Indiana |
Shenango Steel – Neville Island |
| Foot Mineral Co. – Exton |
Shenango Steel – Sharpsville |
| For Scrap – Philadelphia |
Shenango Steel – Wheatland |
| Forbes Regional Health Center – Monroeville |
Shenango Valley Mall – Hermitage |
| Forbes Steel Co. – Canonsburg |
Shenango Valley Steel Co. – New Castle |
| Ford & Kendig Co. – Connellsville |
Shenango Valley Water Co. – Sharon |
| Ford & Kendig Co. Conshohocken |
Shenango, Inc. – Pittsburgh |
| Ford Brownstown Parts Distribution Center – Parts Depot |
Shenango, Inc. Sharpsville |
| Ford City Foundry & Machine Co. – Ford City |
Sheridan Machine Easton |
| Ford City Foundry Machine Co. Ford City |
Sheridan Supply Co. – Newmanstown |
| Ford City Foundry Machine Co. Graff Station |
Sherton Inn – Clarion |
| Ford Dealership – Emlington |
Sherwin Hotel – Pittsburgh |
| Ford Motor Co. Chester |
Sherwood Refining Co. Inc. – Warren |
| Ford Motor Co. Glassmere |
Sherwood Refining Co. Inc. Warren |
| Ford Motor Co. Marcus Hook |
Sherwood School – Forest Park |
| Ford Motor Co. Meadville |
Shipman Coal Co. – Shamokin |
| Ford Motor Co. Pittsburgh |
Shippensburg State College – Shippensburg |
| Ford Pitt Hotel Pittsburg |
Shipping Atomic Power Station – McKees Rocks |
| Forged Steel Wheel Co. – Butler |
Shippingport – Sharon |
| Forrest Laundry – Philadelphia |
Shippingport Atomic Power Station Shippingport |
| Fort Bedford Inn – Bedford |
Shippingport Nuclear Power Plant – Beaver Valley |
| Fort Miffin- Central Heating Plant |
Shippingport Powerhouse – Atomic Plant – Shippensburg |
| Fort Miffin- Central Heating Plant – Philadelphia |
Shipyard Ambridge |
| Fort Miffin- Naval Ammunition Depot – Philadelphia |
Shipyard Bethlehem |
| Fort Mifflin – Philadelphia |
Shipyard Philadelphia – Philadelphia |
| Fort Mifflin Terminal Philadelphia |
Shoenberger Steel Co. – Pittsburgh |
| Fort Pitt Brewing Co. – Pennsylvania |
Shoenberger Works – Pittsburgh |
| Fort Pitt Foundry – McKeesport |
Shook Anderson Manufacturing Co. – Pittsburgh |
| Fort Pitt Hotel – Pittsburgh |
Shopping Center – Erie |
| Fort Pitt Steel Casting – McKeesport |
Shopping Center – Scranton |
| Fort Pitt Supply Co. – Pittsburgh |
Shopping Center – Wilkes Barre |
| Fort Washington – Forrest Hills |
Shuanberger Steel Co. – Pittsburgh |
| Forty-Fort Colliery – Bennett |
Shwartz Paper Mill – Philadelphia |
| Forty-Fort Colliery Bennett |
Sibberline – Hometown |
| Foseco Inc. – Mt. Braddock |
Siberline – Lansford |
| Foster Wheeler Corp. – Mountain Top |
Sid Harvey of Pa King of Prussia |
| Foster Wheeler Corp. Oil City |
Sid Harvey of Reading – Reading |
| Foster Wheeler Corp. Sunbury |
Sid Harvey of Reading Allentown |
| Foster Wheeler Plant – Mountaintop |
Side School – Scranton |
| Foster-Wheeler – Oil City |
Side Vo- Tech – Pringle |
| Founders Hall, Rt. 322 – Hershey |
Signal Finance – Uniontown |
| Four Corners Powerhouse – Avoca |
Silk Mill – Dorranceton |
| Four States Coal Coke Co. – Pittsburgh |
Silver Brook Coal Co. – Mauch Chunk |
| Fox Grocery – Belle Vernon |
Silver Brook Coal Co. Silver Brook |
| Fox Grocery Co. – Wetterau – Belle Vernon |
Silver Steel Corp. – Bettendorf |
| Fox Run Apartments – Philadelphia |
Simon Gratz High School – Philadelphia |
| Francis Brothers & Jellett Inc. – Philadelphia |
Simonds Abrasive – Philadelphia |
| Francisco Sugar Co. – Philadelphia |
Simonds Abrasives Co. Philadelphia |
| Frank & Sedar Dept. Store – Philadelphia |
Simonians C F & Sons Philadelphia |
| Frank Ford – Philadelphia |
Simonim Oil Co. Philadelphia |
| Frank Goodheart Sons Inc. Lancaster |
Simonton Glass Plant Pennsboro, WV |
| Frank Kneeland Machinery Co. – Pittsburgh |
Simpson & Watkins Bennett |
| Frank Metzler Farm – Somerset |
Simpson & Watkins Carbondale |
| Frank R. Phillips Power Station Wireton |
Simpson & Watkins Coxton |
| Frank Roberts & Sons Inc – Punxsutawney |
Simpson & Watkins Duryza |
| Frank Romano – Philadelphia |
Simpson & Watkins Peckville |
| Frank Samuels – Ce Minerals Valley Forge |
Simpson & Watkins Scranton |
| Frank Sedar Dept. Store Philadelphia |
Simpson & Watkins Wyoming |
| Frankford Arsenal – Philadelphia |
Sinclair – Koppers Chemical Plant – Monaca |
| Frankford Arsenal Bureau of Ordinance – Philadelphia |
SInclair Koppers Co. Kobuta Plant Monaca |
| Frankford Electric Railway Co. |
SInclair Koppers Co. Monomer Plant Kobuta |
| Frankford Hospital – Philadelphia |
Sinclair Oil – Pascagoula, MS |
| Frankford Junction – Philadelphia |
Sinclair Refining Co. Maple Glen |
| Frankford Metal Treating – Philadelphia |
Sinclair Refining Co. Marcus Hook |
| Frankford Plan – Philadelphia |
Sinclair Refining Co. Philadelphia |
| Frankford Tannery Philadelphia |
Sinclair Refining Co. Trainer Chester |
| Frankfort Metal Treating Philadelphia |
Sinclair-Koppers – Kabuta |
| Frankfurt Plant Philadelphia |
Singer Ice Co. – McKees Rocks |
| Franklin Building Supply – Nashville |
Singer- Nimick Works Pittsburgh |
| Franklin Hospital – Franklin |
Singer-Nimick Works – Pittsburgh |
| Franklin Lumber Co. – New Alexandria |
Sinking Spring Foundry Co. – Sinking Springs |
| Franklin Mall – Franklin |
Sinking Springs |
| Franklin Mall – Washington |
Sisters of Good Shepherd Philadelphia |
| Franklin Manufacturing Co. – Franklin Manufacturing Co |
Sisters Of Mercy Bldg B- Miseracordia College – Dallas |
| Franklin Manufacturing Co. Stoneboro |
Sisters Of the Good Shepherd – Philadelphia |
| Franklin Marshall College – Lancaster |
Sisters of The Good Shepherd Scranton |
| Franklin Mint – Philadelphia |
Sitkin Metal Trading, Inc. Lewistown |
| Franklin Motel – Philadelphia |
Sivics Hardware Store – Monessen |
| Franklin Quality Refining Co. – Franklin |
Skateland Motors – Johnstown |
| Franklin Refinery Philadelphia |
Skating Rink Bethlehem |
| Franklin Smelting & Refining – Philadelphia |
SKF Altoona Plant Addition Altoona |
| Franklin Smelting Co. – Concordville |
Skf Ball Bearing Front Erie Streets Philadelphia |
| Franklin Smelting Refining Philadelphia |
Skf Industries – Philadelphia |
| Franklin Steel Works – Franklin |
Skf Plant Addition – Altoona |
| Franklin Sugar Co. – Philadelphia |
Skin & Cancer Clinic – McKees Rocks |
| Franklin Sugar Refining Co. – Philadelphia |
Skin Cancer Clinic McKees Rocks |
| Franklin Works – Johnstown |
Skinner Engine Co. – Erie |
| Frantz Distillers, Inc. – Berlin |
Slatington Foundry, Mach & Boiler Works – Slatington |
| Frantz Heating & Roof Co. – Reading |
Slatington Railway Co. |
| Fraternal Club – Guffey |
Slippery Rock Middle School – Slippery Rock |
| Frazee Lumber Co. Uniontown |
Slippery Rock State Teachers College – Slippery Rock |
| Frazier Engineering – Monroeville |
Slippery Rock University – Slippery Rock |
| Fred Beesley Co. – Williamsport |
Slofee Mine – Portage |
| Frederick A. Poth – Philadelphia |
Small Powerhouse – Lewistown |
| Freebrook Corp. – Kittanning |
Smethport School – Smethport |
| Freedman Wholesale Lumber Co. – Russellton |
Smith Brothers Ironworks – Philadelphia |
| Freedom High School – Bethlehem |
Smith Kline & French – Connellsville |
| Freedom Oil Works Co. – Freedom |
Smith Kline French Beckman Philadelphia |
| Freedom Refinery Freedom |
Smith Kline French Conshohocken |
| Freedom-Valvoline Oil Co. – Freedom |
Smith Kline French Philadelphia |
| Freemans Run |
Smith Kline French Swedeland |
| Freeport Brick Co. – Freeport |
Smith Kline French Swedesboro |
| Freeport Terminal Inc- Liquid Bulk Terminal – Freeport |
Smith Kline French Upper Marion |
| Freeport Water Works Co. – Freeport |
Smithfield Prison – Smithfield |
| Freight Pitcalm Pittsburgh, Philadelphia Stockyard Philadelphia |
Smithfield St. Terminal – Pittsburgh |
| Freight Pitcalm Pittsburgh, Woodland Avenue Philadelphia |
Smoketown Elementary School – Lancaster |
| Freihofer Baking Co. – Philadelphia |
Snellenburg Building – Philadelphia |
| Freihofer Vienna Baking Co. – Philadelphia |
Social Security Building 8Th Arch Streets Philadelphia |
| Frick Building – Pittsburgh |
Socony Vacuum Oil Co. – McCrae |
| Frick Hospital – Mount Pleasant |
Solesbury Elementary School – Solesbury |
| Friends School – Haverford |
Solis-Cohen – Philadelphia |
| Friendship Bank – Liberty |
Somerset Ave. – Windber |
| Friskies Pet Care Co. – Allentown |
Somerset Coal Co. – Bosewell |
| Frog Switch Manufacturing Co. – Carlisle |
Somerset Jail – Somerset |
| Frog Switch MFG C Carlisle |
Somerset Mills – Philadelphia |
| Front Street Station -Erie |
Somerset Mills Philadelphia |
| Fruehauf Plant – Uniontown |
Somerset Steel Erection – Somerset |
| Fruehauf Trailers – Johnstown |
Somerset Warehouse – Somerset |
| Ft. Indiantown Gap Military Reservation – Annville |
Somerset, Mall – Somerset |
| Ft. Marion Power Station – Point Marion |
Somma Sheet Metal – Verona |
| Ft. Pitt Brewing Co. – Sharpsburg |
Songer Construction Co. Washington |
| Ft. Pitt Hotel – Pittsburgh |
Sonman Shaft Coal Co. |
| Ft. Pitt Malleable & Grey Iron Co. – McKees Rocks |
Sonman Shaft Coal Co. – Portage |
| Furlong Construction Co. – Hilltown |
SoNMan Shaft Coal Co. Portage |
| Furlong Construction Co. |
Sonneborn Division Petrolia |
| G & H Steel Service Drexel Hill |
Sonoco Products Co. Downingtown |
| G Ramsey Sons New Castle |
Sony Plant – New Stanton |
| G W Childs Public Ledger Building – Philadelphia |
Sorensen Industries Inc. Darry |
| G. A. F. Corp. Industrial Prod Division Erie |
Soult Wholesale Co. – Clearfield |
| G. A. Haupt, Jr. – Frackville |
South Allegheny High School – McKeesport |
| G. A. Haupt, Jr. Frackville |
South Buffalo School Sarver |
| G. B. Markle & Co. #4 Colliery Jeddo |
South Carolina Philadelphia |
| G. B. Markle & Co. Highland #5 Colly Jeddo |
South Chester Tube Co. – Chester |
| G. B.Markle & Co. – Gedda |
South Heights Power Station – Wireton |
| G. C. Murphy Co. Ambridge |
South Hill Terrace – Brownsville |
| G. C. Murphy Co. Bridgeville |
South Hills High School – Pittsburgh |
| G. C. Murphy Co. Clarion |
South Hills Ice Co. – Dormont |
| G. C. Murphy Co. Corry & Farrell |
South Hills Village – Bethel Park |
| G. C. Murphy Co. Corry |
South Park Home Economics & Administration – Pittsburgh |
| G. C. Murphy Co. Etna |
South Penn Oil Co. Plant No 1 Rouseville |
| G. C. Murphy Co. Farrell |
South Philadelphia High School – Philadelphia |
| G. C. Murphy Co. Indiana |
South Pittsburgh Water Co. – Pittsburgh |
| G. C. Murphy Co. Johnsonburg |
South Pittsburgh Water Works – Pittsburgh |
| G. C. Murphy Co. Kittanning |
South Ride – Pittsburgh |
| G. C. Murphy Co. McKeesport |
South Side Elementary School – Shippingport |
| G. C. Murphy Co. Meadville |
South Side Hospital – Pittsburgh |
| G. C. Murphy Co. Monroeville |
South Side Plant – Pittsburgh |
| G. C. Murphy Co. New Kensington |
South Side Works Station #52-2332 Pittsburgh |
| G. C. Murphy Co. Robinson Township |
South Wilkes Barre Colliery South Wilkes Barre |
| G. C. Murphy Co. Uniontown |
Southeastern Green School District – Greensboro |
| G. C. Murphy Co. Whitehall |
Southern Cambria Railway Co. – Southfork |
| G. E. Industrial Tube Plant – Scranton |
Southern Cambria St. Railway Co. – Johnstown |
| G. E. Metropolitan Edison |
Southern Cambria Street Railway Co. – Johnstown |
| G. E. Metropolitan Edison-Titus Station Turbine – Edison |
Southern Cambria Street Railway Co. South Fork |
| G. Garrett & Sons – Philadelphia |
Southern Kraft Division International Paper Co. – York Haven |
| G. K. Garrett Co. – Philadelphia |
Southern Manual Training School – Philadelphia |
| G. Ramsey & Sons – New Castle |
Southern Natural Gas Co. – Pittsburgh |
| G. S. A – Harrisburg |
Southern Nitrogen Co. – Port Wentworth |
| G. S. A. Harrisburg |
Southern Traction Co. – Pittsburgh |
| G. W. Allen Co. – Philadelphia |
Southmark Mills Co. – Philadelphia |
| G. W. Allen Co. Philadelphia |
SouthPennsylvania Railroad |
| G. W. Blabon Co. – Philadelphia |
Southside Works – Pittsburgh |
| G. W. Childs Public Ledger Building – Philadelphia |
Southwark Foundry & Machine Co. – Philadelphia |
| G. W. Johnson Co. – New Castle |
Southwark Station – Philadelphia |
| G. W. Johnson Co. New Castle |
SouthWater Co. – Connellsville |
| GAF Corp. – Fullerton |
SouthWater Pollution Control Plant Philadelphia |
| GAF Corp. Philadelphia |
Spang & Co. – Butler |
| GAF Corp. Ruberoid Erie |
Spang Chalfant & Co. Inc. – Pittsburgh |
| GAF Corp. Ruberoid Fullerton |
Spang Chalfant Co. Inc. Sharpsburg |
| GAF. Corp. Industrial Prod. Division – Erie |
Spang Co. Butler |
| Gage Co. – Titusville |
Spang Co. Pittsburgh |
| Gair Box – Philadelphia |
Spang Steel & Iron Co. – Pittsburgh |
| Gallery Chemical Corp. Callery |
Spangler High School – Spangler |
| Galvanized Steel Deck – Ambridge |
Spano Painting Company Pittsburg |
| Galveston – Philadelphia |
Spaug Chalfaut & Co. – Etna |
| Garage Office Building |
Spear Carbon – St. Marys |
| Garden Spot Jr. High New Holland |
Spearhead Cabinet Shop – Pittsburgh |
| Garden Spot Junior High – New Holland |
Spearman Iron Co. – Sharpsville |
| Garden State Tanning Comp Fleetwood |
Specialty Precision Wire Mt Carmel |
| Garfield Junior High School – Johnstown |
Specialty Rings Products Cornwells Hgts |
| Garland Brothers – Pittsburgh |
Specialty Steel – Braddock |
| Garland Nut & Rivet Co. Pittsburgh |
Spector Freight System – Philadelphia |
| Garman Mills Station – Possum Glory |
Spectrum – Philadelphia |
| Garrett Co. – Ellwood City |
Speer Carbon Building St Marys |
| Garrick Theater – Philadelphia |
Speer Carbon Co. Bradford |
| Garvey Manor Nursing Home – Altoona |
Speer Carbon Co. Speer Resistor Division Bradford |
| Gas Plant Conshohoken |
Speer Carbon Plant, St. Marys |
| Gas Pumping Station – Bagdad |
Speer Resistor Division Bradford |
| Gateshirt Development Corp. Philadelphia |
Spicer Manufacturing Co. – Pottstown |
| Gateway Center |
Spirax-SARCO Inc. – Allentown |
| Gateway Center Building #1-6 Pittsburgh |
Spirit Harley Davidson – Glenshaw |
| Gateway Manufacturing – Masontown |
Spreckels Sugar Refining Co. – Philadelphia |
| Gatx Corp. – Sharon |
Sprenger Brewing Co. – Lancaster |
| Gautier Steel Department – Johnstown |
Spring & Forge – Latrobe |
| Gaylord Colliery – Plymouth |
Spring Brook Water Supply Co. – Scranton |
| Gaylord Colliery Plymouth |
Spring Forge – Latrobe |
| Gaylords – Washington |
Spring Grove Paper Mill – Spring Grove |
| Gdula Coal Co. Dunlo |
Spring Mill Manor – Ivyland |
| GE Erie |
Spring Siding |
| GE Pennsylvania Electric Turbine Repair Pittsburgh |
Springdale Elementary School – Springdale |
| Ge Plant Philadelphia |
Springdale Power Station – Cheswick Power Station |
| GE Transportation Systems Division Erie |
Springdale Power Station – Penn – Springdale |
| GE Transportation Systems Locomotive Plant – Erie |
Springdale Power Station Unit #8 Springdale |
| Geare-Marston, Inc. – Philadelphia |
Springdale Powerhouse Springdale |
| Gee- Bee Dept. Store – Monaca |
Springerie- Harbor Creek Road – Erie |
| Geisinger Medical Center – Danville |
Spring-Ford Area High School – Royersford |
| Gem Manufacturing Co. – Pittsburgh |
Springhill Suites- Marriott Pnc Park – Pittsburgh |
| Gen Alden Coal – Ashley |
Springs Cotton Mills – Lancaster |
| Gen Engineering Works Inc – Philadelphia |
Springwell Foundry – Chester |
| Gen Smelting & Ref Co. – Philadelphia |
SS Bertz Whse – Lancaster |
| General Al – Wilkes- Barre |
SS Boiler House Station #30 – Pittsburgh |
| General American Transport Corp. Sharon |
St Clair County Gas & Electric Co. – Philadelphia |
| General American Transportation Corp. – Sharon |
St Francis Hospital – Pittsburgh |
| General Cable Co. – Glenwillard |
St Joe Minerals – Josephtown |
| General Carbice – Greensburg |
St Joe Smelting – Monaca |
| General Chemcial Co. Of Pennsylvania – Pittsburgh |
St Joseph Lead Co. – Monaca |
| General Chemical Co. Delaware Works Marcus Hook |
St Margaret’s Hospital – Pittsburgh |
| General Chemical Co. Maple Glen |
St. Andrews School – Johnstown |
| General Chemical Co. Newell |
St. Ann Monastery & Basilica, Scranton |
| General Chemical Co. Pittsburgh |
St. Ann Src Church – Castle Shannon |
| General Chemical Division Newell |
St. Annes Home – Lancaster |
| General Cooperage Philadelphia |
St. Anselm School – Swissvale |
| General Dynamics Corp – Philadelphia |
St. Anthonys School Exceptional Children – Oakmont |
| General Electric – Harrisburg |
St. Augustine Church – Lawrenceville |
| General Electric Co. Allentown |
St. Barnabus – Gibsonia |
| General Electric Co. Bridgeville |
St. Benedict School – Giestown |
| General Electric Co. Courtney |
St. Bernard’s Church – Mt. Lebanon |
| General Electric Co. Erie |
St. Bernard’s Roman Catholic Church |
| General Electric Co. King of Prussia |
St. Bernard’s Roman Catholic Church – Pittsburgh |
| General Electric Co. Kittanning |
St. Camillus – New Castle |
| General Electric Co. Mifflin |
St. Charles – Parma, OH |
| General Electric Co. New Kensington |
St. Charles Seminary – Overbrook |
| General Electric Co. Philadelphia |
St. Clair Coal Co. St. Clair |
| General Electric Co. Plant King of Prussia |
St. Clair Elementary – Pittsburgh |
| General Electric Co. Stroudsburg |
St. Clair Power Plant – Pittsburgh |
| General Electric Co. Switchgear Plant Philadelphia |
St. Colman Convent – Turtle Creek |
| General Electric Co. Warehouse Philadelphia |
St. Corr Inst. At Huntingdon – Huntingdon |
| General Electric Lamp Department Bridgeville |
St. Corrections Institute at Huntingdon |
| General Electric Manufacturing Plant |
St. Edmunds School – Shadyside |
| General Electric Manufacturing Plant – Philadelphia |
St. Elizabeth Convent – Cornwell Heights |
| General Electric Plant – Canonsburg |
St. Francis Hospital – Pittsburgh |
| General Electric Re- Entry Systems Philadelphia |
St. Gabriels School – Whitehall |
| General Engineering Works, Inc. – Philadelphia |
St. George Church Aliquippa |
| General Hospital Monongalia |
St. Germaine School – Bethel Park |
| General Hospital Stroudsburg |
St. Hubert’s Convent – Philadelphia |
| General Hospital Wilkes Barre |
St. James Activity Building – Pittsburgh |
| General Ionics Corp. – Bridgeville |
St. James Episcopal Church – Lancaster |
| General Marketing Services Pittsburgh |
St. Joe Lead Co. Freedom |
| General Motors Corp. – Mifflin |
St. Joe Lead Co. Johnstown |
| General Motors Corp. – Pittsburgh |
St. Joe Lead Co. Monaca |
| General Nutrition Center – Natrona Heights |
St. Joe Mineral Corp. Monaca |
| General Pershing Hotel – Dubois |
St. Joe Resources Co. – Josephtown |
| General Refr Corp – Philadelphia |
St. Joe Smelting Monaca |
| General Refractories Co. Philadelphia |
St. Joe Zinc Corp. Of America Monaca |
| General Refractories Co. Sproul |
St. John Lutheran Church – McKeesport |
| General Refractories Mt. Union |
St. Johns Church – Delmont |
| General Ribbon Mills, Inc. – Catasauqua |
St. Johns General Hospital – Pittsburgh |
| General Ribbon Mills, Inc. |
St. Johns School – Baden |
| General Smelting & Refining Co. – Philadelphia |
St. Joseph Hospital Lancaster |
| General Steel – Avonmore |
St. Joseph Lead Co. 71 Monaca |
| General Steel Castings Avanmore |
St. Joseph Lead Co. Josephtown |
| General Steel Castings Bodyston |
St. Joseph Lead Co. Monaca |
| General Steel Castings Eddystone |
St. Joseph Minerals Zinc Smelter – Monaca |
| General Supply Co. Coplay |
St. Joseph’s Academy – Greensburg |
| General Textile Mills – Philadelphia |
St. Josephs Church – Clairton |
| General Tire & Rubber Co. – Jeannette |
St. Josephs Dorseyville |
| General Tire Rubber Chemicals Plastic Div. Jeannette |
St. Joseph’s Hospital – Reading |
| Generation Stores Engleside Service Depot Lancaster |
St. Josephs New Castle |
| Gene’s Garage – Philadelphia |
St. Louis Die Casting Corp. Ripley |
| Genettis Supermarket – Shenandoah |
St. Louis Plate Glass Co. – Pittsburgh |
| Geneva College – Beaver Falls |
St. Luke’s Hospital – Bethlehem |
| Gen’L Chemical Co. Of Penna – Pittsburgh |
St. Margaret Hospital – Pittsburgh |
| Gentex Corp. – Carbondale |
St. Mark’s School – Altoona |
| Geo A Smith & Co. – Philadelphia |
St. Marys Church – Altoona |
| Geo K Garrett Co. Inc – Philadelphia |
St. Marys Church – Charleroi |
| Geo M Newhall Eng & Co. – Philadelphia |
St. Marys Elementary School – McKeesport |
| Geo Westinghouse Jr. – Pittsburgh |
St. Mary’s Laundry – Ardmore |
| Geo. F. Moilers Co. – Gettysburg |
St. Nicholas Building – Pittsburgh |
| Geo. F. Uber Co. – Philadelphia |
St. Patricks Church – Canonsburg |
| Geo. M. Newhall Engineering Co. – Philadelphia |
St. Paul’s Church – Philadelphia |
| Geo. S. Harris & Sons – Philadelphia |
St. Paul’s Roman Catholic Orphan Asylum – Idlewood |
| Geo. Sall Metals – Philadelphia |
St. Pius Elementary School – McKeesport |
| George A. Fuller Contracting Co. – Philadelphia |
St. Pius X Seminary – Dalton |
| George A. Smith & Co. – Philadelphia |
St. Raphaels Church – McKeesport |
| George F. Uber Co. – Philadelphia |
St. Regis – Champion – International Paper – Paper Mill |
| George H. Walbridge Lackawanna Light Co. – Scranton |
St. Regis Paper – York |
| George Hasbrook Farms – Titusville |
St. VIncent School & Rectory – Plymouth |
| George Hasley & Sons Allegheny |
St. Wendelins High School – Butler |
| George I. Bodine, Trustee Philadelphia |
Stackpole Carbon – Saint Marys |
| George K Garrett Co. Inc M – Philadelphia |
Stackpole Carbon Plant – Kone |
| George M. Newhall Engineering Co. – Philadelphia |
Staggerson Dam Stevenson Dam – Cameron County |
| George Pottash & Co. Philadelphia |
Stagmaier Brewing Co. – Wilkes Barre |
| George S. Harris & Sons – Philadelphia |
Staley Starch – Philadelphia |
| George Sall Metals Co. – Philadelphia |
Staley Syrups – Morrisville |
| George School – Bucks County |
Stanbridge Apartments – Lansdale |
| George Singleton – Scranton |
Standard Box Pittsburgh |
| George V Hamilton Inc. McKees Rock |
Standard Chair Co. – Union City |
| George V. Cresson – Philadelphia |
Standard Floor Co. – Pittsburgh |
| George V. Hamilton, Inc. – McKees Rocks |
Standard Ice Manufacturing Co. – Philadelphia |
| George W. Blabon Co. Nicetown, Philadelphia |
Standard Life Insurance Building – Pittsburgh |
| George Westinghouse Jr. – Pittsburgh |
Standard Oil Co. Atlantic Refinery Philadelphia |
| Georgetown Sand & Gravel – Georgetown |
Standard Oil Co. Philadelphia |
| Georgia Pacific Pulp & Paper – Reading |
Standard Oil Co. Steelton |
| Georgia Power Co. Waynesboro |
Standard Oil Tank – Philadelphia |
| Georgia-Pacific Corp. Pulp Paper Reading |
Standard Plant – Ellwood City |
| Georgia-Pacific Corp. Reading |
Standard Plastics – Fogelsville |
| Gerace Hill Boiler & Bur Philadelphia |
Standard Press Steel Co. – Jenkinstown |
| Gerace William Philadelphia |
Standard Register Co. – Bedford |
| Gerard Trust Building – Philadelphia |
Standard Sanitary Manufacturing Co. – New Brighton |
| German Hospital – Philadelphia |
Standard Scale & Supply Co. – Beaver Falls |
| Germantown District High School – Philadelphia |
Standard Seamless Tube Co. – Economy |
| Germantown Hospital – Philadelphia |
Standard Steel – Lewistown |
| Germantown Jct – Philadelphia |
Standard Steel Car Co. – Butler |
| Germantown Jewish Center – Philadelphia |
Standard Steel Car Co. Pittsburgh |
| Germantown Junction – Philadelphia |
Standard Steel Car Co. Renfrew |
| Germantown Philadelphia |
Standard Steel Division, Burnham |
| Germantown YMCA – Philadelphia |
Standard Steel Lewiston |
| GES Circulating Fluid Bed Plant |
Standard Steel Specialty Beaver Falls |
| Gettysburg College – Gettysburg |
Standard Steel Spring – Coraopolis |
| Gettysburg High School – Gettysburg |
Standard Steel Works Co. – Philadelphia |
| Gettysburg PA Schindler Elevators |
Standard Steel Works Division Burnham |
| GFS Shop – Carnegie |
Standard Tin Plate Co. – Canonsburg |
| Gherardi – Philadelphia |
Standard Underground Cable Co. – Pittsburgh |
| Giant Eagle – Ebensburgh |
Stanley Electric Altoona |
| Giant Eagle – Etna |
Stanley G Flagg & Co. – Pottstown |
| Giant Eagle – New Brighton |
Stanley Spring Works Inc. Harrisburg |
| Giant Eagle – New Kensington |
Stanton Colliery – Ashley |
| Giant Eagle – Turtle Creek |
Stanwix Heating Plant – Pittsburgh |
| Giant Eagle – View |
Stanwix Plant Pittsburgh |
| Giant Portland Cement Co. – Egypt |
Stanzel Alfred Cryodon |
| Gibson & Sons, Inc. – Philadelphia |
Star Fire Brick Co. – Pittsburgh |
| Gibson Electric Co. – Delmont |
Starr Stores Warehouse – Philadelphia |
| Gilbert Associates, Inc. – Reading |
State Capital Building – Harrisburg |
| Gill Hauck – Bradford |
State Childrens Home – Ebensburg |
| Gimbels Dept. Store – Monroeville Mall – Monroeville |
State College – Altoona |
| Gimbels Dept. Store – Pittsburgh |
State College Presbyterian Church – State College |
| Gimbels Dept. Store – South Hills Village |
State Correctional Institute – Camp Hill |
| Gimbels Store – Philadelphia |
State Correctional Institute – Frackville |
| Gipsey Grove Colliery – Dunmore |
State Correctional Institute – Houtzdale |
| Girard Coal Co. – Mt. Carmel |
State Correctional Institution – Camp Hill |
| Girard Coal Co. Pittston |
State Employment Office – Altoona |
| Girard College – Philadelphia |
State Hospital – Somerset |
| Girard Estate Peoples Bank – Philadelphia |
State Hospital for The Insane – Norristown |
| Girard Estate Philadelphia |
State Institution – Polk |
| Girard Gollege – Philadelphia |
State Line Painting – New Bedford |
| Girard Point Lpg Recv & Caustic Reg – Philadelphia |
State Liquor – Youngwood |
| Girard Point Philadelphia |
State Office Building |
| Girard Point Refinery Gate #24 Philadelphia |
State Office Building, Commonwealth Ave. & Foster St. – Harrisburg |
| Girard Refinery – Philadelphia |
State Police Barracks – Punxsutawney |
| Girard Trust Co. Building Philadelphia |
State Police Office- Capitol Building – Harrisburg |
| Girls Normal School – Philadelphia |
State School – Ebenburg |
| Girrard College – Philadelphia |
State Teachers College – Clarion |
| Girton Manufacturing Co. – Millville |
Station “B” Works – Philadelphia |
| Gladwyne College – Gladwyne |
Station J – Tacony |
| Glasgow Iron Co. – Pottstown |
Stauffer C Dan Ingomar |
| Glass Containers Corp. – Knox |
Stauffer Chemical Co. – Maple Glen |
| Glass Containers Corp. Marienville |
Stauffer Chemical Co. Inc. – Frye Station |
| Glass Containers Corp. Parker |
Stauffer Chemical Co. Marcus Hook |
| Glassine Paper Co. Conshohocken |
Stauffer Chemical Co. Morrisville |
| Glassmere Casting Co. – Creighton |
Stauffer Chemical Plant Monongahela |
| Glassport Tennis Courts – Glassport |
Stawbridge & Clothier – Philadelphia |
| Glastic Corp. – Jefferson |
Steam Generator Sales Service – Coatesville |
| Glatfelter Paper Mill – Spring Grove |
Steel Car Forge Co – Ellwood City |
| Glatfelter Pulp & Paper Mill – Spring City |
Steel Car Forge Co. – Butler |
| Glen Alden Coal Ashley |
Steel Car Forge Co. Ellwood City |
| Glen Alden Coal Co. Audenreid |
Steel City Lumber Co. – Ambridge |
| Glen Alden Coal Co. Buttonwood |
Steel Mill – Allaquepa |
| Glen Alden Coal Co. Maxwell Colliery Scranton |
Steel Mill – Clearfield |
| Glen Alden Coal Co. Nanticoke |
Steel Works Duquesne Works Duquesne |
| Glen Alden Coal Co. Plymouth |
Steele Elementary School – Philadelphia |
| Glen Alden Coal Co. South Wilkes Barre |
Steelite Corp. – Wheatland |
| Glen Alden Coal Co. Station Colliery Ashley |
Steelton & Highspire Railroad Co. – Bethlehem |
| Glen Gery Shade Brick Shillington |
Stefanak Co. Farrell |
| Glen Gery Shale Brick Corp. – Harrisburg |
Stegmaier Brewing Co. Wilkes Barre |
| Glen Gery Shale Brick Corp. Ephrata |
Stemerich Garage – Slippery Rock |
| Glen Gery Shale Brick Corp. Harrisburg |
Stephen Girard Building – Philadelphia |
| Glen Gery Shale Brick Corp. Watsontown |
Sterling Land Co. Pittsburgh |
| Glen Summit Hotel & Land Co. – Glen Summit |
Sterling Metal Philadelphia |
| Glen Summit Spring Siding |
Sterling Silk Glove Co. – Bangor |
| Glen Willow Ice Manufacturing Co. Manayunk – Philadelphia |
Stern & Silverman – Philadelphia |
| Glen Wilton Co. |
Stern Jacob & Sons Jenkintown |
| Glenn M. Baker Heating & Plumbing – Huntingdon |
Sterrick Creek Coal Co. – Scranton |
| Glenolden – Glenfield |
Stevenson Dam – Cameron County |
| Glenshaw Glass Co – Glenshaw |
Stevenson Motors – Greenville |
| Glenwood Station – Pittsburgh |
Stevenson Terrace Apartments – Philadelphia |
| Glidden Metals – Johnstown |
Stick Trailers – Fairless Hills |
| Glidden-Durkee – Johnstown |
Stick Trailers |
| Globe Automatic Sprinkler System – Philadelphia |
Stilltronics – Oakmont |
| Globe Dye Works Co. – Philadelphia |
Stirling Sintering Co. South Heights |
| Globe Eye Works – Philadelphia |
Stone & Webster Engineering – Wiliamsport |
| Globe Plastic Co. Croydon |
Stone Canyon Consolidated Coal Co. – Wilkes Barre |
| Globe Rubber Co. – Philadelphia |
Stone Container Corp. Philadelphia |
| Globe Ticket Co. Philadelphia |
Stone Container Corp. St. Regis Paper York |
| Glp Co. – Philadelphia |
Stone Quarry – Greenville |
| Glyco Chemicals Division – Wiliamsport |
Stone Webster Engineering Corp. Williamsport |
| GM W. Mifflin Boro Pittsburgh |
Stoner-Mudge – Rochester |
| Gnex Inc – Erie |
Stores Department – Beaver Falls |
| Gold Bond Building Products – Milton |
Stores Department Beaver Falls |
| Gold Bond Building Products Milton |
Stouffers Plant King of Prussia |
| Golden Hills Nursing Home – New Castle |
Strand Township – Stroudsburg |
| Goldsmith Building – Philadelphia |
Strand Township Monroe Co. Stroudsburg |
| Goldsteins & Sons, Inc. – Philadelphia |
Stratton Motor Co. – Clearfield |
| Golf Tower – Pittsburgh |
Straub Brewing – Pittsburgh |
| Good Shepherd Church – New Castle |
Straub Brewing Pittsburgh |
| Good Shepherd Roman Catholic Parish – Camp Hill |
Strawbridge & Clother Department Store – Germantown |
| Goodyear – Grove City |
Strawbridge & Clothier – Philadelphia |
| Goodyear Tire & Rubber Co. – Connellsville |
Strick Trailers Fairless Hills |
| Gordon Strobel & Lawreau – Philadelphia |
Stricklands Hotel – Mt. Pocono |
| Gottery – Erie |
Stroudsburg State Teachers College Boiler House Stroudsburg |
| Governor’s Mansion – Harrisburg |
Struthers & Wells – Titusville |
| Governor’s Mansion Harrisburg |
Struthers Coal & Coke Co. – New Salem |
| Gpu Nuclear Corp. 3 Mile Island Power Plant |
Struthers Scientific Warren |
| Gpu Nuclear Corp. Three Mile Island Unit Harrisburg |
Struthers Station – Warren |
| Grace Mines Cornwall |
Struthers Wells Corp. Warren |
| Grace Mines Morgantown |
Suburban Hospital – Monroeville |
| Gracedale Country Home – Allentown |
Suburban Plant – Scranton |
| Graceton & Coral Coal Co. – Graceton |
Suburban Propane – Lancaster |
| Graham Foundry & Machine Co. – Monongahela |
Suburban Rapid Trans. Lt Railway Co. – Pittsburgh |
| Graham Jean Malvern |
Suburban Rapid Transit Street Railway Co. – Pittsburgh |
| Grain Elevator & Storage Co. |
Suburban Water Co. – Hulton |
| Gram Asbestos Co. – Erie |
Sugar Apparatus Manufacturing Co. – Philadelphia |
| Gramar Construction Moon Township |
Sugar Refining & Molasses Co. Philadelphia |
| Gramham Jean Malvern |
Sui Gas Purification Plant Karachi |
| Grand Insulation – Philadelphia |
Sui Gas Purification Plant Sui |
| Grandview Nursing Home – Clarion |
Sullifoam Willow Grove |
| Granite City Steel Co. Pittsburgh |
Sullivan Products Willow Grove |
| Granite Hosiery Mills – Souderton |
Sulzberger Junior High – Philadelphia |
| Grant Station – Pittsburgh |
Summerdale Dye & Fin Inc – Philadelphia |
| Grant Steel – Duquesne |
Summerdale Dye & Finishing Inc. – Philadelphia |
| Grant Towers – Duquesne |
Summerdale Dye Fin Inc. Philadelphia |
| Grantley Rd York County – York |
Summit Branch Mining Co. – Williamstown |
| Grantley Road, York County – York |
Summit Branch Railroad Co. – Wilkes Barre |
| Granview Hospital Sellersville |
Summit Park Apartments – Philadelphia |
| Grape Products Co. – North East |
Sun Co. Inc. – Oregon |
| Graphite Bronze – McConnellsville |
Sun Co. Inc. Philadelphia |
| Grasselli Powder Co. – Wyside |
Sun Co. Inc. Refinery Marcus Hook |
| Gratz & Gillespie School – Philadelphia |
Sun Company, Inc. Refinery – Maple Glen |
| Grays Ferry Cogeneration Part – Philadelphia |
Sun Gas Station – Bellefonte |
| Grays Ferry Cogeneration Partnership Philadelphia |
Sun Oil – Chester |
| Grays Ferry Road & Carpenter St. – Philadelphia |
Sun Oil – Sunoco Refinery – Lester |
| Great Lakes Steel Corp. Pittsburgh |
Sun Oil Co. – Maple Glen |
| Greater Pittsburgh Airport – Pittsburgh |
Sun Oil Co. 17- 13 Ammonia Plant Warehouse Marcus Hook |
| Gree Inc. Erie |
Sun Oil Co. Chester |
| Green Bag Cement – Nequehoning |
Sun Oil Co. Flare Tower Marcus Hook |
| Green Ridge Coal Co. – Scranton |
Sun Oil Co. Marcus Hook Refinery Marcus Hook |
| Green Spring Co. – Philadelphia |
Sun Oil Co. Oaks |
| Green Tweed – North Wales |
Sun Oil Co. of Pennsylvania |
| Greencastle Packing Co. – Greencastle |
Sun Oil Co. Philadelphia |
| Greene County Detention Home – Greene County |
Sun Oil Co. Toledo |
| Greene County Hospital – Waynesburg |
Sun Oil Co. Twin Oaks Warehouse #3 Twin Oaks |
| Greene County Prison – Greene County |
Sun Oil Co. Twin Oaks Warehouse Twin Oaks |
| Greene Middle School – Waynesburg |
Sun Oil Co. Warehouse Twin Oaks |
| Greene, Tweed & Co. – Palmetto Packings |
Sun Oil Plant – Maple Glen |
| Greengate Mall Greensburg |
Sun Oil Storage Tank Marcus Hook |
| Greensburg Central Catholic High School – Greensburg |
Sun Oil-Sunoco Refinery |
| Greensburg- Connellsville Coal Coke Co. Burgettstown |
Sun Petroleum Co. – Maple Glen |
| Greensburg Country Club – Greensburg |
Sun Refining & Marketing Co. – Philadelphia |
| Greensburg Hospital – Greensburg |
Sun Shipbuilding & Drydock Co. – Chester |
| Greensburg Recorder of Deeds Greensburg |
Sun Shipbuilding & Drydock Co. Pennship Chester |
| Greensburg-Connellsville Coal & Coke Co. – Burgettstown |
Sun Shipbuilding & Drydock Co. Philadelphia |
| Greenville Hospital – Greenville |
Sun Shipbuilding Shipyard – Chester |
| Greenville Power Station – Greenville |
Sun Shipbuilding Shipyard Scott Paper Mill – Delta |
| Greenville Steel Car Co. Plant Greenville |
Sun Transport Co. – Chester |
| Greenville Tube Div. Emerson Greenville |
Sunbeam Corp. Meadville |
| Greenway Manufacturing – Nemacolin |
Sunbeam Equipment Co. – Meadville |
| Greenwich Collieries Barnesboro |
Sunbeam Plant – Meadville |
| Greyhound Bus Terminal – Philadelphia |
Sunbury & Northumberland Electric – Sunbury |
| Grief Brothers Containers Washington |
Sunbury Converting Works Sunbury |
| Grief Brothers Washington |
Sunbury High School – Butler |
| Griffin Dodge Cochranton |
Sunbury Steam Station Shamokin Dam |
| Griffin Emanuel Brick Co. – Peukiomen |
Sunny Slopes – Phillipsburg |
| Grimme Combustion Inc. Don Philadelphia |
Sunoco – Munhall |
| Grimms – Sharon |
Sunoco Chemical Inc. – Philadelphia |
| Grinding Feed Sheridan |
Sunoco Frazier Blvd – Homewood |
| Grinnell Co. Inc. – Columbia |
Sunoco Inc Point Breeze – Philadelphia |
| Grinnell Corp. Columbia |
Sunoco Pennsylvania – Pittsburgh |
| Griswold Worsted Co. – Darby |
Sunoco Philadelphia – Philadelphia |
| Grit Publishing Co. – Williamsport |
Sunoco Refining & Marketing Marcus Hook |
| Grocer’s Sugar House – Philadelphia |
Sunoco Rm Point Breeze Philadelphia |
| Grosglass – Beaver Falls |
Sunoco Station – Beaver |
| Grosglass- 27Th Street Plant – Beaver Falls |
Sunoco Washington Blvd – Washington |
| Grove City College – Grove City |
Sunship Drydock Co. Chester |
| Grove City Elementary – Grove City |
Sunship-Pennship Chester |
| Grove City- Sewage Treatment Plant – Grove City |
Superintendent U. S. Mint Philadelphia |
| Grover Cleveland Public School – Philadelphia |
Superior Boiler Equipment Co. Ardmore |
| Grover Farms, Inc. – Grover |
Superior Builders Supply Co. – Baden |
| GSA – Harrisburg |
Superior Builders Supply Co. Baden |
| Guam Co. Philadelphia |
Superior Combustion Industries Emmaus |
| Guaranty Silk Corp. – Nanticoke |
Superior Draw Aliquippa |
| Guardian Encr & Dev Co. – Carnegie |
Superior Drawn Steel Co. – Monaca |
| Gulf Chemical Neville Island |
Superior Fireproof Door & Sash – Scranton |
| Gulf Chevron Oil Refinery-Philadelphia |
Superior Lumber Co. Baden |
| Gulf Chevron Refinery – Philadelphia |
Superior Steel Corp. – Carnegie |
| Gulf Oil Corp. #4 Boiler House Philadelphia |
Superior Thread & Yarn Co. – Philadelphia |
| Gulf Oil Corp. Cool House #491 Chlor Building #492 Girard Point |
Superior Zinc Corp. – Bristol |
| Gulf Oil Corp. Cooling Water Pump House #491 Girard Point |
Supervalu – New Stanton |
| Gulf Oil Corp. Cooling Water Pump House #491 Philadelphia |
Supplee Memorial Presbyterian Church – Maple Glen |
| Gulf Oil Corp. Gate #24 Girard Point |
Supradur – Windgap |
| Gulf Oil Corp. Gate #24 Philadelphia |
Surface Chemicals Inc.- Metals Division – Forbes Road |
| Gulf Oil Corp. Girard Point Refinery Philadelphia |
Surface Combustion Scranton |
| Gulf Oil Corp. Girard Point |
Surpass Leather Co. – Philadelphia |
| Gulf Oil Corp. Neville Island |
Susquehanna Coal Co. – Nanticoke |
| Gulf Oil Corp. Number 3 Boiler House Philadelphia |
Susquehanna Coal Co. Newport Centre #4 Shaft |
| Gulf Oil Corp. Philadelphia Refinery #4 Boiler House Philadelphia |
Susquehanna Coal Co. Stearns |
| Gulf Oil Corp. Philadelphia Refinery 15# Steam Replacement Philadelphia |
Susquehanna Coal Co. Wilkes Barre |
| Gulf Oil Corp. Philadelphia Refinery Gate No. 24 Philadelphia |
Susquehanna Collieries Co. – Mt. Carmel |
| Gulf Oil Corp. Philadelphia |
Susquehanna Ordnance Works Allentown |
| Gulf Oil Corp. Pittsburgh |
Susquehanna Power Station Shawville Station |
| Gulf Oil Corp. Sulphur Unit Philadelphia Refinery Philadelphia |
Susquehanna Silk Mills Huntington |
| Gulf Oil Corp. Visa Breaker Unit Philadelphia |
Susquehanna Silk Mills Jersey Shore |
| Gulf Oil Gas Station – Presto |
Susquehanna Silk Mills Sunbury |
| Gulf Oil Refinery Girard Point |
Susquehanna Steam Power Station – Berwick |
| Gulf Oil Refinery Philadelphia |
Susquehanna University Womens Mens Dormitories Selinsgrove |
| Gulf Oil Refinery Pittsburgh |
Susquehannock High School – Glen Rock |
| Gulf Refining Co. Girard Point |
Sustek Paul Co. Inc. Philly |
| Gulf Refining Co. Pittsburgh |
Swan Trucking |
| Gulf Research & Development – Cheswick |
Swanee Paper Mill – Ransom |
| Gulf Research & Development Co. – Harmarville |
Swanee Potlach Power Station – Ransom |
| Gulf Research & Development Co. – Pittsburgh |
Swank Refractories – Johnstown |
| Gulf Research Development Cheswick |
Swarthmore College – Swarthmore |
| Gulph Woolen Mills – Gulph |
Swarthmore Street Railway |
| Gultendolf Press – Cranberry |
Swees Steel Co. Williamsburg |
| Gun Plant #269 Philadelphia |
Sweet’s Steel – Wiliamsport |
| Gw Allen & Co. – Philadelphia |
Swift & Co. – Chambersburg |
| H Miller Spring & Manufacturing Co. Pittsburgh |
Swindell-Dressler Co. – Pittsburgh |
| H. A. Diffenbach – Philadelphia |
Swing & Bateman – Philadelphia |
| H. Blinderman & Son – Hellerstown |
Swobe & Deane Pontiac Buick – Ambridge |
| H. C. Frick Coke Co. Brownfield |
Sykesville Coke Co. Sykesville, Jefferson County |
| H. C. Frick Coke Co. Bute Station |
Sylvania Electric Product Co. – York |
| H. C. Frick Coke Co. Calumet |
Sylvania Electric Products, Inc. Emporium |
| H. C. Frick Coke Co. Colbers Mine |
Sylvania Sylvania Electric Co. Warren |
| H. C. Frick Coke Co. Dearth Mines |
Syntex Corp. – Allentown |
| H. C. Frick Coke Co. Lambert |
Synthane Corp. – Oaks |
| H. C. Frick Coke Co. Leith |
Synthane- Taylor Corp. Taylor Fibre Norristown |
| H. C. Frick Coke Co. Monarch |
Synthane-Taylor Corp. |
| H. C. Frick Coke Co. Monmouth |
Syria Mosque – Oakland |
| H. C. Frick Coke Co. Mt. Pleasant Station |
T. C. Roberts & Co. – Philadelphia |
| H. C. Frick Coke Co. Phillips Mine |
T. C. Roberts & Co. Philadelphia |
| H. C. Frick Coke Co. Pittsburgh |
T. K. King Plumbing Shop – Beaver Falls |
| H. C. Frick Coke Co. Ronco |
Tacony Chemical Works – Philadelphia |
| H. C. Frick Coke Co. Rowes Run Station |
Tacony Iron & Metal Co. – Tacony |
| H. C. Frick Coke Co. Rowes Run |
Tacony Ordnance Corp. – Tacony |
| H. C. Frick Coke Co. Trotter |
Talbot – Philadelphia |
| H. C. Frick Coke Co. Union Station |
Talco Metal Products Co. – Philadelphia |
| H. C. Frick Coke Co. United Station |
Talco Metals Co. – Philadelphia |
| H. C. Frick Coke Co. Walnut Hill |
Talon Federated Fund Meadville |
| H. C. Frick Coke Co. Westmoreland County |
Tamaqua Area High School – Tamaqua |
| H. C. Frick Coke Co. York Run |
Tamaqua Colliery – Tamaqua |
| H. C. Price Co. – Philadelphia |
Tamaqua Colliery Tamaqua |
| H. C. Trick Coke Co. – Pittsburgh |
Tapper Supply Co. Hazleton |
| H. D. Justi Division – Philadelphia |
Tar Products Div. – New Norristown |
| H. Daroff & Sons – Philadelphia |
Tarentum Housing – Tarentum |
| H. E. Brosius Kittanning |
Tarentum Light & Water Plant – Tarentum |
| H. E. Colliery – Bennett |
Tarentum Light Plant Tarentum |
| H. F. Watson Co. – Erie |
Tarentum Paper Mills – Tarentum |
| H. H. Brosius – Kittanning |
Tarinto Monument Works – Lehigh County |
| H. H. Chrowder Co. – Allentown |
Tasty Baking Co. – Philadelphia |
| H. H. Curry Co. – Pittsburgh |
Tasty Baking Co. Hunting Park Avenue Philadelphia |
| H. H. Heinz Laboratory Pittsburgh |
Tasty Baking Co. Inc. – Philadelphia |
| H. H. Robertson Co – Ambridge |
Tate Jones & Co. Inc. – Pittsburgh |
| H. H. Robertson Co. – Pittsburgh |
Tate Jones Co. – Beaver Falls |
| H. J. Heinz & Co. – Chambersburg |
Tavern Lodge – New Wilmington |
| H. J. Heinz & Co. – Pittsburgh |
Taws & Hartman – Philadelphia |
| H. J. Heinz & Co. Allegheny |
Taylor Fibre – Norristown |
| H. J. Heinz & Co. Chambersburg |
Taylor Forge & Pipe Works – Carnegie |
| H. J. Heinz & Co. Pittsburgh |
Taylor Forge Pipe Works Carnegie |
| H. J. Heinz & Co. Plumbing Dept Pittsburgh |
Taylor-Wharton Iron & Steel Co. – Easton |
| H. J. Heinz & Co. Stock Room Pittsburgh |
Tech Building Metzler Church Rd Brownstown |
| H. J. Heinz Manufacturing Plant – Pittsburgh |
Tech Food Products Co. – Pittsburgh |
| H. J. Hines Pittsburgh |
Techaid Co. Monroeville |
| H. J. Hines Research Labs Pittsburgh |
Teledyne Columbia- Summerhill Scottsdale |
| H. Julius Klingler & Co. – Butler |
Teledyne Firth-Sterling McKeesport |
| H. K. Crimming Tradesman Grain Elevator & Storage Co. – Philadelphia |
Teledyne Firth-Sterling Trafford |
| H. K. Drumming Tradesman Grain Elevator & Storage Co. |
Teledyne Vasco. Monaca |
| H. K. Horter & Co. – Pittsburgh |
Teledyne, Inc. – Waynesboro |
| H. K. Mulford Plant |
Temple Boiler – Philadelphia |
| H. K. Porter & Co. Pittsburgh |
Temple Covenant of Peace – Easton |
| H. Koppers Co. New Castle |
Temple Hospital – Philadelphia |
| H. Koppers Co. Pittsburgh |
Temple Iron Co. Bennett |
| H. L. Edwards & Co. – Philadelphia |
Temple Iron Co. Forty Fort |
| H. L. Frick Coke Co. – Pittsburgh |
Temple Iron Co. Peckville |
| H. P. Kinsey Easton |
Temple Iron Co. Reading |
| H. R. Curry Co, Inc. – Pittsburgh |
Temple Iron Co. Scranton |
| H. T. Horst Construction Co. Reading |
Temple Iron Co. Temple |
| H. T. Osburn & Company, Inc. Franklin |
Temple Iron Co. Wyoming |
| H. T. Watson Co. Erie |
Temple University |
| H. W. Butterworth & Sons – Philadelphia |
Temple University – Philadelphia |
| H. W. Oliver Central Power Plant – Pittsburgh |
Temple University Hospital – Philadelphia |
| H. W. Oliver’s Central Power Plant – Pittsburgh |
Temple University Life Bio- Sciences Building Philadelphia |
| H. Westhoff- Florist – Hoffman Station |
Temple University Medical School Philadelphia |
| H.J. Heinz Manufacturing Plant |
Temple University Mental Health Facility – Philadelphia |
| H.K. Mulford Plant – Philadelphia |
TenneCo. Plant – Pasadena Plant |
| Hackmeister Co. – McKees Rocks |
Tennessee Gas Mercer |
| Hadden Steel Co. – Cupola |
Tere Woodring & Co. – Hazleton |
| Hadden Steel Co. – Cupola |
Tetsner Dyeing Co. – Philadelphia |
| Haemer Tool – Saegertown |
Texas Co – Maple Glen |
| Hafleigh & Co. – Philadelphia |
Texas Co. Marcus Hook |
| Hahn Louis & Sons Pittsburgh |
Textile Machine Works – Reading |
| Hahnemann Hospital – Philadelphia |
Textron, Inc. Providence |
| Hainsworth Steel Co. – Pittsburgh |
Thaddeus Stevens Industrial School – Lancaster |
| Hajoca Building – Philadelphia |
Thaddeus- Stevens School – New Castle |
| Hajoca Building Ground Floor Philadelphia |
Thalheimer Brothers Inc – Philadelphia |
| Hajoca Building Philadelphia |
The American Pulley Co. – Philadelphia |
| Hale Building – Philadelphia |
The Board of Public Education Center Pittsburgh |
| Hall & Garrison – Philadelphia |
The Budd Co. – Philadelphia |
| Hall Station – Monroeville |
The Budd Co. Philadelphia |
| Hallmor Co. – Bethel Park |
The Cincinnati Gasket Packing & Mfg. Inc. |
| Halstead Metal Products, Inc. Zelienople |
The Federal Building – Pittsburgh |
| Haltenback & Stephens – Allentown |
The Guy S Haak Builders Franklin |
| Hamburg State School – Hamburg |
The Hill School – Pottstown |
| Hameraschlag Hall Pittsburgh |
The May Department Stores Co. – Pittsburgh |
| Hamilton Construction Philadelphia |
The Mercersburg Academy – Mercersburg |
| Hamilton George V Inc. McKees Rock |
The Mercersburg Academy |
| Hamilton Watch Co. – Lancaster |
The Mercersburg Academy Mercersburg |
| Hammerhill Aliquippa |
The O. Hommel Co. Carnegie |
| Hammermill Paper – Lock Haven |
The Patterson-Kelley Co, Inc. – Stroudsburg |
| Hammermill Paper Co. – Erie |
The Pennsylvania Water Co. Nadine |
| Hammermill Paper Co. Lock Haven |
The Philip Carey Manufacturing Corp. – Philadelphia |
| Hammermill Paper Mill – Erie |
The Pierce Glass Co. Port Allegany |
| Hammond Ironworks Warren |
The Spring Cotton Mills – Lancaster |
| Hamont Medical Center – Erie |
The Spring Cotton Mills |
| Hamot Hospital – Erie |
The U G I Corp. – Harrisburg |
| Hamot Medical Center – Erie |
The U G I Corp. Harrisburg |
| Hampton Boiler Plant – Scranton |
The U G I Corp. Reading |
| Hampton Central Elementary School – Allision Park |
Theater Workers Union – Local 8 – Philadelphia |
| Hampton High School – Allison Park |
Theodore E. Moser – Philadelphia |
| Hampton Mines – Scranton |
Theodore Presser Yeadon |
| Handshuh Joe Builder Roslyn |
Thermal Engineering Inc – Lehigh County |
| Handy & Harman Tube Co. – Norristown |
Thermal Engineering Inc. – Allentown |
| Handy Harman Tube Co. Norristown |
Thermal Industries – Wilkinsburg |
| Haneys Furniture New Castle |
Thermal Refractories Co. – Chester |
| Hanford Nuclear Powerhouse – Hanford |
Thermal Research Engineering Conshohocken |
| Hanford Ordinance Works – Hanford |
Thermal Transfer Corp. – Monroeville |
| Hanlon & Wilson Co. Jeanette |
Therman Candy Co. – McKeesport |
| Hanlon Electric Co. Monroeville |
TherMax Co. Kennett Square |
| Hanlonwilson Machine Shop – Wilkinsburg |
Thomas Dolan & Co. – Philadelphia |
| Hannastown Plant Coal & Coke Hannastown |
Thomas F. Deegan Philadelphia |
| Hanover Industrial Park – Hanover |
Thomas H. Grigg Philadelphia |
| Hanover Power Co. – Hanover |
Thomas Iron Co. – Hellerstown |
| Happenstall Co. – Pittsburgh |
Thomas Iron Co. Alburtis |
| Happy Day Laundry Pittsburgh |
Thomas Iron Co. Hokendauqua |
| Harbison Walker Refractories Co. – Chester |
Thomas Jaggers – Philadelphia |
| Harbison-Walker Garber Research Center – Mifflin |
Thomas Jefferson Hospital – Philadelphia |
| Harbison-Walker Mifflin |
Thomas Jefferson University Hospital – Philadelphia |
| Harbison-Walker Pittsburgh |
Thomas Kent Manufacturing Co. – Clifton Heights |
| Harbison-Walker Refractories Co. Chester, Delaware County |
Thomas May Pierce School – Philadelphia |
| Harbison-Walker Refractories Co. Mt. Union |
Thomas Textile – Philadelphia |
| Harbison-Walker Refractories Co. Pittsburgh |
Thompson & Sons – Pittsburgh |
| Harbison-Walker Refractories Co. Woodland |
Thompson Brothers – Philadelphia |
| Harbison-Walker Refractories Mt. Union |
Thos Dolan & Co. – Philadelphia |
| Harbor Steel New Castle |
Thos E Lutner – Philadelphia |
| Harbson Walker Co. – Pittsburgh |
Thos. Wolstenholme Sons & Co. – Philadelphia |
| Harcast Corp. – Glenfield |
Three Mile Island Dauphin County |
| Harcast Corp. – Glenolden |
Three Mile Island Nuclear Plant – Middletown |
| Harcum Junior College – Bryn Mawr |
Three Mile Island Nuclear Power Plant – Harrisburg |
| Hardesty Industries – Philadelphia |
Three Mile Island Nuclear Station Middletown |
| Harding Ave. Jr. High School Aliquippa |
Three Mile Island Power Plant – Harrisburg |
| Harding Ave. Junior High School |
Three Mile Island Power Station – Three Mile Island |
| Hardinge Co. – York |
Thrift Drug Store – Clairton |
| Hardware & Industrial Tool – Philadelphia |
Thrift Drug Warehouse – Blawnox |
| Hardwich & Magee Co. – Philadelphia |
Thro’ American Gas & Electic Co. – Philadelphia |
| Hardwick & Magee Co. – Philadelphia |
Thro.’ Chas. M’Caul Co. – Philadelphia |
| Harison Walker – Mifflin |
Tide Water Pipeline Co. McCauley |
| Harleigh Brookwood Coal Co. – Mahanoy Plane |
Tidewater Pipeline Co. Bradford |
| Harleigh Brookwood Coal Co. Pottsville |
Tidewater Pipeline Co. Hudsondale |
| Harleigh- Brookwood Colleries |
Tidewater Steel Co. – Chester |
| Harmar Coal – Harmaville |
Tilden Junior High School Philadelphia |
| Harmar Coal Harmarville |
Till Distributing – Erie |
| Harmar House Motel – Springdale |
Timothy Thornton Construction – Wexford |
| Harmarville Mine – Harmarville |
Tin Mill Aliquippa |
| Harmarville Sewage Treatment Plant Harmarville |
Tin Plate Manufacturing Co. |
| Harmerville High School – Harmerville |
Tioga Coal Co. – Wilkes Barre |
| Harmerville Rehab Center – Harmerville |
Tionesta Valley Chemical Co. Mayburg |
| Harmony School District – Harmony |
Tippins Machinery Co. Inc. Pittsburgh |
| Harold Junior High School – Hempfield |
Titan Metal Manufacturing Co. Bellefonte |
| Harrisburg Foundry & Machine Co. – Easton |
Titan Missile Sites – Ephrata |
| Harrisburg Hospital – Harrisburg |
Titus Generating Station Power Plant – Reading |
| Harrisburg International Airport – Middletown |
Titus Generating Station Reading |
| Harrisburg Light & Power Co. – Harrisburg |
Titus Powerhouse Reading |
| Harrisburg State Hospital Boiler House Harrisburg |
Titus Station Plant Superintendent Reading |
| Harrisburg Station – Philadelphia |
Titus Station Powerhouse |
| Harrisburg Steel – Harrisburg |
Titus Station Powerhouse – Reading |
| Harrisburg Water Works – Harrisburg |
Titus Station Unit Heater Reading |
| Harrisburgh Light & Power Co. – Harrisburg |
Titusville Ironworks – Titusville |
| Harrisburgh Water Works – Harrisburg |
Titusville Ironworks Co. |
| Harrison Brothers – Philadelphia |
Titusville Supply Co. – Titusville |
| Harrison Building – Philadelphia |
Tive Water Pipe Line Co. – McCauley |
| Harrison Elementary School – Penn Trafford |
Tobyhanna Signal Depot Building Tobyhanna |
| Harrison Frazier & Co. – Philadelphia |
Todays Home – Greentree |
| Harrison Shop – Rt 8 – Glenshaw |
Toffs Inc – Doryea |
| Harrison, Frazier & Co. – Philadelphia |
tomic Power Div – Bettis Field – Mifflin Township |
| Harrison, Frazier Co. Philadelphia |
Tonsina – Chester |
| Harrison, Havemeyer & Co. – Philadelphia |
Toolmatic Co. – Zeleinople |
| Harrison, Havemeyer & Co. Franklin Refinery – Philadelphia |
Topps Bubble Gum – Avoca |
| Harrison, Havemeyer Co. Philadelphia |
Topton Bakery Topton |
| Harry A Prock Cabinet Co. – Glenside |
Torrance State Hospital – Torrance |
| Harry C Olson Inc. Mt Lebanon |
Tosco Refining Co. – Trainer |
| Harry Elenberger Lbr Co. – Chicora |
Toth Auto – Hartstown |
| Harry Roman – Pittsburgh |
Toth Trucking Honesdale |
| Harry Williams Construction – Carlisle |
Towanda Co. |
| Harry’s Auto Repairs Philadelphia |
Tower Hill Connellsville Coke Co. – Republic |
| Harsburgers Dairy – Altoona |
Tower Hill Connellsville Coke Co. Uniontown |
| HarsCo. Corp. – Camp Hill |
Town Houses – Connellsville |
| Harshaw, Fuller, & Goodwin – Philadelphia |
Town Of Harmarville – Sewage Treatment Plant – Harmaville |
| Hartman Steel Co. – Beaver Falls |
Townsend Co. – New Brighton |
| Harvey & Collins – Austin |
Township Light & Power Co. – Shamokin |
| Harwood Electric & Power Co. Harwood |
Township Light, Heat & Power Co. Shamokin |
| Harwood Electric Co. Harwood Mines |
Township Of Annville – Annville |
| Harwood Electric Power Co. – Harwood |
Toyad Co. – Latrobe |
| Haselton Sewage Hazelton |
Tr Stat No Tr #103 Aliquippa |
| Haskell Manufacturing – Oakmont |
Traco Window Factory – Cranberry |
| Hatboro Plumbing & Heating – Hatboro |
Trade & Convention Center – Philadelphia |
| Hatfield Power Station – Masontown |
Traders Coal Co. – Laflin |
| Hatfield Power Station Hatfield |
Tradesman Grain Elevator & Storage Co. Philadelphia |
| Hatfield Power Station, Units 1 & 2 Masontown |
Trafford High School – Trafford |
| Hatfield’s Ferry Power Plant – Masontown |
Trailmobile Manufacturing Co. – Philadelphia |
| Hatfield’s Ferry Power Station – Greensburg |
Trans- Lux Theatre Colonial Harrisburg |
| Hauto Steam Electric Station – Hauto |
Trans Penn Wax Co. – Titusville |
| Haverford College – Haverford |
Transcontinental Gas Pipeline Corp. – Renovo |
| Haverford High School – Haverford |
Transcontinental Pipeline Corp. – Frazer |
| Haverford State Mental Hospital – Haverford |
Trans-Lux Theatre Colonial – Harrisburg |
| Hawk Run Acid Mine Water Treatment Plant Hawk Run |
Trappe & Limerick Electric Street Railway Co. – Collegeville |
| Hawkins Village Housing Project – Rankin |
Treadkill Buck Run Coal Co. – Minersville |
| Hayes Munition Plant – Hayes |
Treadwell Construction Co. – Midland |
| Haymaker Village – Monroeville |
Tred Weld – Nevel Island |
| Hays Army Depot – Pittsburgh |
Tredyffrin Township |
| Hays Ordinance – Hays |
Tremont Laundry Co. – Philadelphia |
| Hazard Manufacturing Co. – Wilkes Barre |
Trent Inc. – Philadelphia |
| Hazel Atlas Glass Co. – Washington |
Trent, Inc. – Philadelphia |
| Hazelton Plumbing Heating Supply Co. Hazelton |
Treverton Electric Light & Power Station – Trenton |
| Hazelton Sewage Plant Hazelton |
Trexler Farms – Allentown |
| Hazelton Sewage Treatment Hazelton |
Trexler Farms Egypt |
| Hazelton Water Co. – Hundsondale |
Trexlertown Paper Box Co. – Trexlertown |
| Hazelton Water Works. – Hazleton |
Tri Cash & Carry Lumber Co – Beaver Falls |
| Hazelwood Byproducts – Pittsburgh |
Tri Cities Water Co. – Charleroi |
| Hazelwood Byproducts #2 Fractionating Column Pittsburgh |
Tri- Ridge Corp. – Clinton |
| Hazelwood Plant Batt #2 Pittsburgh |
Tri River Building Products Inc. – Greensburg |
| Hazelwood Plt – Pittsburgh |
Tri River Building Products Inc. Greensburg |
| Hazelwood Plt Batt #2 – Pittsburgh |
Tri State Non Ferrous Co. – Quakertown |
| Hazelwood Works – Pittsburgh |
Triangle Mechanical Co. North Wales |
| Hazen Engineering Co. – Penn Hills |
Tribune Democrat – Johnstown |
| Hazle Mountain Coal Co. – Conyngham |
Trinity Middle School – Washington |
| Hazlet & Spring Hill |
Tri-State Engineering – Washington |
| Hazleton Authority Hazleton |
Tri-State Metals Co. Quakertown |
| Hazleton Brick Co. – Hazleton |
Tri-State Non Ferrous Co. Quakertown |
| Hazleton City Of – Hazleton |
Trojan Powder Co. – Seiple |
| Hazleton Electric Light & Power Co. – Hazleton |
Trooper High School – Trooper |
| Hazleton Local Office, 75 North Laurel Street Hazelton |
Trost Sheet Metal Co. – Erie |
| Hazleton Water Works – Hazleton |
Troy Jack – Huntingdon |
| Hbg – Enola |
Tru Knit Industries – Philadelphia |
| Hc Price – Connelsville |
Truck Station 70 – Pittsburgh |
| Hc Prick, National #1 – Bridgeville |
Truck Station 70 – Welshman B P Plant – Pittsburgh |
| Heatherington Plant – Folcroft |
Truck Stop – Corsica |
| Heaven Nursing Home Vandergrift |
Truck Stop – Harrisburg |
| Hebrew Institute – Squirrel Hill |
Truesdale Colliery – Nanticoke |
| Heere Bros. Reading |
Truesdale Colliery Plymouth |
| Heeren Brothers & Co. – Pittsburgh |
Trw Inc. – Harrisburg |
| Hefferman Co. – Carnegie |
Tub Prod. – Koppel |
| Heidelberg Colliery – Avoca |
Tubalas Products Div – Beaver Falls |
| Heintz Div Of Kelsey Hayes Co. – Philadelphia |
Tubalas Products Division – Beaver Falls |
| Heintz Division of Kelsey-Hayes Co. Philadelphia |
Tube City Brewing Co. – McKeesport |
| Heintz Manufacturing Co. – Philadelphia |
Tuberculosis Hospital – Pittsburgh |
| Heintz Manufacturing Plant – Philadelphia |
Turbine Laboratory School |
| Heinz H J Co. – Pittsburgh |
Turner & Serrel – Philadelphia |
| Heinz U.S.A. – Pittsburgh |
Turtle Creek Valley Water Co. – Pittsburgh |
| Heinz, H.J. Co. – Pittsburgh |
Tuscarora Oil Co. Ltd. – Harrisburg |
| Helen Mining Homer City |
TWR Inc. Harrisburg |
| Helfenstein, Lewis & Green – Philadelphia |
Tyco Electronics Corp. Harrisburg |
| Hellen Mills – Brockport |
Tygart Glass – Washington |
| Hellen Mills Brockport, Elk County |
Tygart Valley Glass Co. – Washington |
| Hellwig Silk Dying Co. – Wissinoming Philadelphia |
Tyler Charcoal Iron Tin Mills – Washington |
| Hemlock Creek |
Tyler School Of Fine Art – Philadelphia |
| Hempfield Elementary School – Greensburg |
Tyler Tube & Pipe Co. – Washington |
| Hempfield Grade School – Hempfield |
Tynan Incinerator- Dela City, Chester Township |
| Hempfield High School – Greensburg |
Tyrol Distributors Allentown |
| Hempfield Jr. High School – Greensburg |
Tyrone High School – Tyrone |
| Hempfield Power Station -Greensburg |
Tyrone Iron Co. – Harrisburg |
| Hempfield Township School – Greensburg |
Tyrone Iron Co. Tryone |
| Hendel Hat Co. – Reading |
Tyrone Paper Mill Westvaco – Tyrone |
| Henderson Sugar Refinery – Philadelphia |
Tyson Metal Products – Pittsburgh |
| Hendrick Manufacturing Co. – Carbondale |
U G I Corp. Harrisburg |
| Henry Clay Frick Community Hospital – MT. Pleasant |
U G I Corp. Hunlock Creek |
| Henry Clay Furnace – Chickies |
U G I Corp. Lancaster |
| Henry Colliery – Wilkes Barre |
U G I Corp. Reading |
| Henry Disston Sons Tacony |
U S Dept Of Agriculture – Philadelphia |
| Henry Laudenslager – Harrisburg |
U S Steel Corp – Pittsburgh |
| Henry Mckeen & Co. – Lehigh County |
U. G.I. Co. – Philadelphia |
| Henry McKeen & Co. Lehigh Mills Easton |
U. G. I. Co. Philadelphia |
| Henry Miller Carpentry Cochranton |
U. S Post Office – Altoona |
| Henry Phipps Central Power Plant – Pittsburgh |
U. S Post Office – Bridgeville |
| Henry Phipps Mutual Training School Allegheny |
U. S Post Office – Greensboro |
| Heppenstall- Eddystone Corp. Eddystone |
U. S Post Office – Johnstown |
| Heppenstall Forge & Knife Co. – Pittsburgh |
U. S Post Office – Philadelphia |
| Heppenstall Of Pittsburgh – Pittsburgh |
U. S Post Office – Pittsburgh |
| Heppenstalls – Lawrenceville |
U. S Post Office – Warrendale |
| Heppnstall Forge & Knife Co. – Pittsburgh |
U. S Post Office – Washington (Old Building) |
| Hercules Cement Co. Stockertown |
U. S Post Office 30Th Street Station Philadelphia |
| Hercules Cement Corp. – Hercules |
U. S. Air Force – Olmsted Field – Middletown |
| Hercules Chemical Co. Elizabeth |
U. S. Aluminum Co. – New Kensington |
| Hercules Picco Resins – W. Elizabeth |
U. S. Aluminum Co. New Kensington |
| Hercules Powder Co. – Philadelphia |
U. S. Aluminum Corp. – Marietta |
| Hercules Powder Co. Higgins Plant Philadelphia |
U. S. Aluminum Corp. Marietta |
| Herman Goldner Co. – Philadelphia |
U. S. Aluminum of America – Pittsburgh |
| Herr Gas Oil Shamokin |
U. S. Aluminum of America Pittsburgh |
| Herris Island – Pittsburgh |
U. S. Army – Philadelphia |
| Herron Hill Pumping Station – Pittsburgh |
U. S. Army Reserve Center – Pittsburgh |
| Herrs Island Washingtons Landing |
U. S. Army Reserve Center – Reading |
| Herrs Potato Chips, Inc. – Nottingham |
U. S. Army Supply Base – Philadelphia |
| Hershey Chocolate Co. – Bernville |
U. S. Army War College- Carlisle Barracks – Carlisle |
| Hershey Chocolate Corp. – Hershey |
U. S. Asbestos Co. – Manheim |
| Hershey Medical Center – Hershey |
U. S. Asbestos Co. Manheim |
| Hershey Motel – Hershey |
U. S. Asbestos Raybestos-Manhattan Inc. Manheim |
| Hershey State Police Training Barri – Hershey |
U. S. Bureau of Mines – Braceton |
| Hertz Supply Co. Inc. Allentown |
U. S. Bureau of Mines – Pittsburgh |
| Hess Brothers Warehouse – Allentown |
U. S. Bureau of Mines – Schuylkill Haven |
| Hess Department Store – Lancaster |
U. S. Bureau of Mines Allegheny City Braceton |
| Hess Department Store, Harrisburg – Lancaster |
U. S. Bureau of Mines Bruceton |
| Hess, Inc. – Scranton |
U. S. Bureau of Mines Pittsburgh |
| Heston High School – Philadelphia |
U. S. Bureau of Mines Schuykill Haven |
| Hestonville Mantua Fairmount Passenger RR Philadelphia |
U. S. Bureau of Mines Snowden Township. Bruceton |
| Hetrick & Wilson – Indiana |
U. S. Bureau of Mines Swedeland |
| Hewlett Packard Avendale |
U. S. Chemical, Neville Island |
| Heyl & Patterson Inc – Pittsburgh |
U. S. Coal & Coke Co. – Pittsburgh |
| Heyl Patterson, Inc. Pittsburgh |
U. S. Coal & Coke Co. Pittsburgh |
| Heyl Physicians Supply Co. – Erie |
U. S. Courthouse & Office Building – Philadelphia |
| Hh Robertson – Ambridge |
U. S. Courthouse Office Building Philadelphia |
| Hi Line Steel Boiler Mt Carmel |
U. S. Courthouse Philadelphia |
| Hibbard-Rodman-Ely Safe Co. – Plainfield |
U. S. Department of Commerce, Bureau of Mines, Pittsburgh |
| Hickory Ridge Colliery – Shamokin |
U. S. Dept Of Agriculture – Philadelphia |
| Hickory Swamp Colliery – Shamokin |
U. S. Dept of Agriculture Philadelphia |
| Highland Brewing Co. – Pennsylvania |
U. S. Dept of Agriculture Wyndmoor |
| Highland Brewing Co. – Pittsburgh |
U. S. Dept. of Commerce |
| Highland Colliery #5 – Jeddo |
U. S. Dept. Of Commerce, Experimental Station – Pittsburgh |
| Highland Mall – Natrona Hts |
U. S. Electric Illuminating Co. |
| Highlands High School – Natrona Heights |
U. S. Electric Illuminating Co. – Philadelphia |
| Highway Appliance Company Chaneroi |
U. S. Engineers Susquehanna River Flood Control – Eiles Barre |
| Highway Barnes – Indiana |
U. S. Engineers Susquehanna River, Barre |
| Highway Materials Bridgeport |
U. S. Envelope – Williamsburg |
| Hill Hall, Wernersville State Hospital Wernersville |
U. S. Glass Plant – Glassport |
| Hills Department Store – Mifflin |
U. S. Government – Special Ordinance Plant – York |
| Hills Housing Complex – Hills |
U. S. Government Shell Loading Plant #1 Tullytown |
| Hillside Coal & Iron Co. – Mayfield |
U. S. Government Special Ordinance Plant York |
| Hillside Coal & Iron Co. Pittston |
U. S. Government Supply Depot – Philadelphia |
| Hilton Hotel – Lancaster |
U. S. Government Supply Depot Quartermasters Philadelphia |
| Hilton Hotel Empire Building Rocks |
U. S. Gypsum Co. Darmont |
| Hilton Hotel Lancaster |
U. S. Gypsum Co. Oakmont |
| Hilton Hotel Mckees Rocks |
U. S. Gypsum Co. Philadelphia |
| HInchliffe Keener Inc. Pittsburgh |
U. S. Hoffman Machinery – Scranton |
| HInchliffe Keener Indiana City |
U. S. Hoffman Machinery Corp. – Pittsburgh |
| Hinckliffe Keener – Pittsburgh |
U. S. Hoffman Machinery Corp. Pittsburgh |
| Hinkle & McCoy – Philadelphia |
U. S. Hoffman Machinery Scranton |
| Hiram G. Andrews Rehabilitation Center – Johnstown |
U. S. Iron & Tin Plate Manufacturing Co. – Dremmler |
| Hiram Swank & Sons – Johnstown |
U. S. Merchant Marine Academy – Kingsport |
| Hiram Swanks Son – Johnstown |
U. S. Mint – Philadelphia |
| Hiram Swanks Sons Irovone |
U. S. Mint 4Th Arch Street Philadelphia |
| Hiram Swanks Sons Johnstown |
U. S. Mint Philadelphia |
| Hitchew Planning Mill – Winber |
U. S. Naval Air Division – Johnsville |
| Hj Heinz Pittsburgh |
U. S. Naval Damage Control Training Center – Philadelphia |
| HK Porter Co. – Pittsburgh |
U. S. Naval Hospital – Philadelphia |
| Hodge Foundry – Grove City |
U. S. Naval Reserve Aviation Base – Horsham |
| Hoetetters Supply Co. York |
U. S. Naval Shipyard – Philadelphia |
| Hoffman Bros – Punxsutawney |
U. S. Navy – Philadelphia |
| Hog Island Shipyard – Philadelphia |
U. S. Navy Mine Depot – York Lyn |
| Holiday Inn – Brookville |
U. S. Navy Yard – League Island |
| Holiday Inn – Clarion |
U. S. Navy Yard – Philadelphia |
| Holiday Inn – Express – Pittsburgh |
U. S. Pipe & Foundry Co. – Scottsdale |
| Holiday Inn – Indiana |
U. S. Pipe & Foundry Co. Scottdale |
| Holiday Inn – Johnstown |
U. S. Pipe & Foundry Scottdale |
| Holiday Inn – Ligonier |
U. S. Plywood – Champion |
| Holiday Inn – Mifflin |
U. S. Post Office – Philadelphia |
| Holiday Inn – New Castle |
U. S. Post Office 30Th Street Station Philadelphia |
| Holiday Inn – Philadelphia |
U. S. Post Office Altoona |
| Holiday Inn – Uniontown |
U. S. Post Office Bridgeville |
| Holland Furnace – Delaware City |
U. S. Post Office Greensboro |
| Hollenbach Colliery #2 & #5 – Wilkes Barre |
U. S. Post Office Johnstown |
| Hollidaysburg Power Station – Hollidaysburg |
U. S. Post Office Philadelphia |
| Holmesburg, Tacony & Frankford Electric Railway Co. Tacony |
U. S. Post Office Pittsburgh |
| Holtwood Power Station – Holtwood |
U. S. Post Office Warrendale |
| Holy Family Church – Seward |
U. S. Post Office Washington – Old Building |
| Holy Ghost Convent & School Pittsburgh |
U. S. Powder Co. Explosive Division Mt. Braddock |
| Holy Redeemer Hospital – Meadowbrook |
U. S. Powder Co. Explosives Division – Mt. Braddock |
| Holy Redeemer Hospital Philadelphia |
U. S. Roll Mill – Avonmore |
| Holy Rosary Church & Parrish – Scranton |
U. S. Sanitary Manufacturing Co. – Monaca |
| Holy Trinity Church – Moon Township |
U. S. Sanitary Manufacturing Co. Monaca |
| Holy Trinity Church – Whitehall |
U. S. Sanitary Mfg. Monaca |
| Home Electric Light & Steam Heating Co. – Tyrone |
U. S. Seamless Tube Co. – Christy Park |
| Home for Indigent & House of Correction |
U. S. Seamless Tube Co. Christy Park |
| Home The Blind – Swissville |
U. S. Signal Corps – Administration Building |
| Homeopathic Hospital – Pittsburgh |
U. S. Signal Corps – Administration Building – Tobyhanna |
| Homeopathic Hospital for The Insane – Allentown |
U. S. SteeI Irvin Works Mifflin |
| Homeopathic Hospital Pittsburgh |
U. S. Steel – Clairton Works – Clarion |
| Homeopathic State Hospital – Lehigh County |
U. S. Steel – Donora |
| Homeopathic State Hospital for The Insane – Hanover |
U. S. Steel – Irving Plant – Dravesburg |
| Homeopathic State Hospital Lehigh County |
U. S. Steel American Bridge – Ambridge |
| Homer City Generating Station – Homer |
U. S. Steel Applied Research Center Monroeville |
| Homer City Generating Station, Unit #3 Homer City |
U. S. Steel Batteries #10, 11 12 Clairton |
| Homer City Power Generating Station – Homer City |
U. S. Steel Carey Furnace – Rankin |
| Homer City Power Station – Indiana |
U. S. Steel Carnegie Illinois Steel – Farrell |
| Homer City Power Station Homer City |
U. S. Steel Carrie Furnace Sinter Plant Rankin |
| Homer City Power Station Indiana County |
U. S. Steel Carrie Furnace |
| Homer City Powerhouse Homer City |
U. S. Steel Carrie Furnaces Rankin |
| Homer City- Sam Place – Coral |
U. S. Steel Central Boiler House McKeesport |
| Homer City Station – Coral |
U. S. Steel Chemical Plant – Pittsburgh |
| Homer City Station Power Plant Homer City |
U. S. Steel Chemical Plant Neville Island Pittsburgh |
| Homestead – Erie |
U. S. Steel Christy Park Works – McKeesport |
| Homestead Borough Of Water Works – Homer City |
U. S. Steel Christy Park Works- McKeesport |
| Homestead Highland Street Railway Co. – Homer City |
U. S. Steel Clairton Coke Coal Chemical Works Clairton |
| Homestead Industries – Coraopolis |
U. S. Steel Clairton Job McKees Rocks |
| Homestead Presbyterian Church – Homestead |
U. S. Steel Clairton Works Benzene Boiler House Clairton |
| Homestead Steel Works – Munhall |
U. S. Steel Clairton Works Clairton |
| Homestead Steel Works Homestead |
U. S. Steel Clairton Works Hot Pitch Tank Clairton |
| Homestead Steel Works Munhall |
U. S. Steel Clairton Works Powerhouse #2 Clairton |
| Homestead Steel Works Pittsburgh |
U. S. Steel Co. – Irwin |
| Homestead Steel Works Rankin |
U. S. Steel Coke Oven Division Clairton |
| Homestead Works – Rankin |
U. S. Steel Company Pittsburg |
| Homestead Works U. S. Steel – Erie |
U. S. Steel Corp. – Allenport |
| Honey Brook Colliery #5 – Aurenreid |
U. S. Steel Corp. – Berwyn |
| Honeywell – Forrest Hills |
U. S. Steel Corp. – Braddock |
| Honeywell Fort Washington |
U. S. Steel Corp. – Christy Park Works – McKeesport |
| Honeywell, Inc. – Emlenton |
U. S. Steel Corp. – Duquesne |
| Honeywell, Inc. T Smethport |
U. S. Steel Corp. – Johnstown |
| Hood, Bonbright & Co. – Philadelphia |
U. S. Steel Corp. – Pittsburgh |
| Hoopes & Townsend Co. Ft. Washington |
U. S. Steel Corp. – Saxonburg Sintering Plant – Houserville |
| Hoopes & Townsend Ft. Washington |
U. S. Steel Corp. – Vandergrift Works – Vandergrift |
| Hope Natural Gas Co. – Pittsburgh |
U. S. Steel Corp. Ambridge Plant Ambridge |
| Hopeman Brothers – Chester |
U. S. Steel Corp. Ambridge |
| Hopewell Shopping Center – Hopewell |
U. S. Steel Corp. American Bridge – Ambridge |
| Hopkinson House Apartments – Philadelphia |
U. S. Steel Corp. Applied Research Lab Station Universal |
| Hopper Paper Co. – Reading |
U. S. Steel Corp. Applied Research Laboratory Monroeville |
| Horlacher Brewing Co. – Allentown |
U. S. Steel Corp. Benzine Plant Clairton |
| Horlacher Brewing Co. – Pennsylvania |
U. S. Steel Corp. Berwyn |
| Horner School Building – Wilkinsburg |
U. S. Steel Corp. Braddock |
| Hornes Dept. Store – Greengate Mall – Greensburg |
U. S. Steel Corp. Christy Park Works – McKeesport |
| Hornes Dept. Store – Monroeville |
U. S. Steel Corp. Clairton Coke Coal Chemical Works Clairton |
| Hornes Dept. Store – North Hills – Pittsburgh |
U. S. Steel Corp. Clairton Works B H Nbr 2 Clairton |
| Hornes Dept. Store Greengate Mall – Greensburg |
U. S. Steel Corp. Clairton Works Bengail Plant Gate Clairton |
| Hornes Dept. Store North Hills – Pittsburgh |
U. S. Steel Corp. Clairton Works Benzene Boiler House Clairton |
| Hornes Warehouse – Crafton |
U. S. Steel Corp. Clairton Works Hot Pitch Tank Clairton |
| Horsehead Industries – Monaca |
U. S. Steel Corp. Clairton Works Powerhouse #2 Clairton |
| Hosletter Supply Co. York |
U. S. Steel Corp. Clairton Works Tar Distillation Plant Clairton |
| Hospital Butler |
U. S. Steel Corp. Donora |
| Hospital For the Insane – Retreat |
U. S. Steel Corp. Dravosburg |
| Hospitality Motor Inn Pittsburgh |
U. S. Steel Corp. Duquesne Works Station No 13 Duquesne |
| Host Farms – Lancaster |
U. S. Steel Corp. Duquesne |
| Host Motel – Lancaster |
U. S. Steel Corp. Edgar Thompson Works Pittsburgh |
| Hostetter Supply Co. York |
U. S. Steel Corp.- Edgar Thomson Works – Braddock |
| Hotel Lafayette – Philadelphia |
U. S. Steel Corp. Ellwood City |
| Houdry Processing Corp. Linwood |
U. S. Steel Corp. Fairless Hills |
| House Of Correction – Philadelphia |
U. S. Steel Corp. Fairless Works Fairless |
| House Of Good Shepherd – Reading |
U. S. Steel Corp. Fairless Works Morrisville |
| House Of the Good Shepherd – Philadelphia |
U. S. Steel Corp. Green City |
| Housing Authority of Johnstown – Johnstown |
U. S. Steel Corp. Hillsville |
| Housing Authority of Pittsburgh |
U. S. Steel Corp. Homestead District Works Pittsburgh |
| Housing Project – Braddock |
U. S. Steel Corp. Homestead Works Homestead |
| Housing Project – Clairton |
U. S. Steel Corp. Homestead Works Pittsburgh |
| Housing Project – Coaldale |
U. S. Steel Corp. Irvin Works Dravosburg |
| Housing Project – Donora |
U. S. Steel Corp. Irvin Works Irvin |
| Housing Project – Fayette County |
U. S. Steel Corp. Irvin Works Mifflin |
| Housing Project – Johnstown |
U. S. Steel Corp. Irvin |
| Housing Project – Masontown |
U. S. Steel Corp. Jack Smith Fairless Works Morrisville |
| Housing Project – McKeesport |
U. S. Steel Corp. Johnstown |
| Housing Project – Monesson |
U. S. Steel Corp. Lab Station Number 2 Universal |
| Housing Project – New Castle |
U. S. Steel Corp. McDonald |
| Housing Project – Pottsville |
U. S. Steel Corp. McKees Rocks |
| Housing Project – Shamokin |
U. S. Steel Corp. McKeesport |
| Houze Glass Co. – Pt. Marion |
U. S. Steel Corp. Metallurgical Lab Vandergrift |
| Howard Axle Plant – Homer City |
U. S. Steel Corp. Monaca |
| Howard Johnson – New Stanton |
U. S. Steel Corp. Monessen |
| Howard Johnson Motel Brookeville |
U. S. Steel Corp. Monroeville |
| Howard Johnson Motel Irwin |
U. S. Steel Corp. Morrisville |
| Howard Johnson Motel Washington |
U. S. Steel Corp. National Tube |
| Howard Reed – Philadelphia |
U. S. Steel Corp. National Works McKeesport |
| Howe & Polk – Danville |
U. S. Steel Corp. Neville Island |
| Howe & Samuel – Danville |
U. S. Steel Corp. New Eagle |
| Howe Brown & Co. – Pittsburgh |
U. S. Steel Corp. Pittsburgh |
| Howe Sound Co. – Lancaster |
U. S. Steel Corp. Rankin Works #2 Turbo Blower Rankin |
| Howe, Brown & Co. – Pittsburgh |
U. S. Steel Corp. Rankin |
| Howmet Corp. – Lancaster |
U. S. Steel Corp. Saxonburg Sintering Plant Houseville |
| Howmet Corp. Lancaster |
U. S. Steel Corp. Saxonburg |
| Hubbard Tool Div – Pittsburgh |
U. S. Steel Corp. Shiremanstown |
| Hubbard Tool Division – Pittsburgh |
U. S. Steel Corp. Tar Distillation Plant Clairton |
| Hubbs & Howe Co. – Erie |
U. S. Steel Corp. Urban Works McKees Rocks |
| Hubbs Howe Co. Erie |
U. S. Steel Corp. Vandergrift Works |
| Hudec Colliery, Inc. Johnstown |
U. S. Steel Corp. Vandergrift Works Vandergrift |
| Hudson Coal Co. – Carbondale |
U. S. Steel Corp. Vandergrift |
| Hudson Coal Co. Olyphant |
U. S. Steel Corp. Works Auditor Clairton Works Clairton |
| Hudson Coal Co. Scranton |
U. S. Steel Corp. Works Station No 13 Duquesne |
| Hudwood Irwin Co. Inc. – Huntingdon |
U. S. Steel Corp. Wyeth Labs Chester |
| Huff Power Station – Johnstown |
U. S. Steel Duquesne Works – Duquesne |
| Huff Power Station – New Florence |
U. S. Steel Edgar Thompson Works Pittsburgh |
| Huffman Industries – Sinking Springs |
U. S. Steel Edgar Thomson Works – Braddock |
| Hugh Mcinnes Rebecca Paper Mill – Bridgeport |
U. S. Steel Edgar Thomson Works Braddock |
| Hughes & Gauthorp Co. – Pittsburgh |
U. S. Steel Fairless Works – Fairless Hills |
| Hughes & Patterson – Philadelphia |
U. S. Steel Furnace – Rankin |
| Hugus & Hacke – Pittsburgh |
U. S. Steel Headquarter Research Center Monroeville |
| Hummelstown Water Supply – Harrisburg |
U. S. Steel Headquarters Building – Pittsburgh |
| Hunlock Creek Luzerne County |
U. S. Steel Imperial W Oil City |
| Hunlock Creek Power Station – Hunlock Creek |
U. S. Steel Irvin Works – Mifflin |
| Hunlock Creek Powerhouse – Hunlock Creek |
U. S. Steel Irvin Works Dravosburg |
| Hunter Manufacturing – Levittown |
U. S. Steel Irvin Works Irvin |
| Hunter Sales Industrial – Bethel Park |
U. S. Steel Isabella Furnace – Etna |
| Hunter Saw & Machine – Lawrenceville |
U. S. Steel Jack Smith Fairless Works Morrisville |
| Hunter Saw Machine Lawrenceville |
U. S. Steel Job Philadelphia |
| Hunting Park Avenue Plant – Philadelphia |
U. S. Steel Maple Creek Coal Mine – New Eagle |
| Hunting Park Plant – Philadelphia |
U. S. Steel Metallurgical Lab Vandergrift |
| Huntingdon Bank – Huntingdon |
U. S. Steel Mill – Ambridge |
| Huntington High School – Huntington |
U. S. Steel Mill – Duquesne Works – Duquesne |
| Hupp Ps – New Florence |
U. S. Steel Mill – Edgar Thompson Plant – Braddock |
| Hussey Building – Pittsburgh |
U. S. Steel Mill – Fairless Works – Fairless Hills |
| Hussey Copper Ltd. – Leetsdale |
U. S. Steel Mill – Morton |
| Hussey Copper Plant – Leetsdale |
U. S. Steel Mill Armco Steel-Ambridge Works Plant – Bristol |
| Hussey Metals Co. Leetsdale |
U. S. Steel Mill McKees Rocks |
| Hutchinson Street Station – Philadelphia |
U. S. Steel Mill, Fairless Hills Morrisville |
| HV Charles Co. – Philadelphia |
U. S. Steel National Tube – McKeesport |
| Hyde Heating Co. Pittsburgh |
U. S. Steel National Tube Works McKeesport |
| Hyde Park Foundry & Machine – Hyde Park |
U. S. Steel National Works McKeesport |
| Hyde Park Gas Co. – Scranton |
U. S. Steel Neville Island Pittsburgh |
| Hyde Park School – Leechburg |
U. S. Steel Office Building Pittsburgh |
| Hydril Co. – Rochester |
U. S. Steel Ordnance Department Neville Island |
| Hydro-Blast Corp. – Waynesboro |
U. S. Steel Pat. #10, 11, 12 Clairton |
| Hydro-Blast Corp. Burnham |
U. S. Steel Philadelphia |
| Hydro-Blast Corp. Danville |
U. S. Steel Rankin Works #2 Turbo Blower Rankin |
| Hydro-Blast Corp. Erie |
U. S. Steel Research & Development – Monroeville |
| Hydro-Blast Corp. Franklin |
U. S. Steel Research Center Monroeville |
| Hydro-Blast Corp. Philadelphia |
U. S. Steel Sinter Plant #1 Saxonburg |
| Hydro-Blast Corp. Waynesboro |
U. S. Steel Tube McKeesport |
| Hygeia Ice Co. – Philadelphia |
U. S. Steel Tubular Products Plant – McKeesport |
| Hygrade Food Products – Philadelphia |
U. S. Steel Urban Works McKees Rocks |
| Hyman Brodsky & Son – Philadelphia |
U. S. Steel Wheel & Axle – McKees Rocks |
| I. T .T. Fluid Products – Lancaster |
U. S. Steel Wheel Axle – McKees Rocks |
| I. T. E. Circuit Breaker Co. Colmar |
U. S. Steel Works Auditor Clairton Works Clairton |
| I. T. E. Circuit Breaker Co. Philadelphia |
U. S. Steel, Clairton Works, Benzene Boiler House Clairton |
| Iberia Sugar Cooperative, Inc. – New Iberia |
U. S. Steel, Clairton Works, Powerhouse #2 Clairton |
| Ibm Office Building – Pittsburgh |
U. S. Steel, Sinter Plant#1 – Saxonburg |
| Illinois Steel Co. – Pittsburgh |
U. S. Steel, Usx – Pittsburgh |
| Illinois Zinc Co. – Pittsburgh |
U. S. Steel-Usx Christy Park McKeesport |
| Imagining Systems – Latrobe |
U. S. Steel-Usx Munhall |
| Immaculate Conception Cathedral – Philadelphia |
U. S. Uniroyal – Butler |
| Immaculate Conception School – Lock Haven |
U. S. Veterans Administration – Altoona |
| Imperial Leather Co. Allegheny |
U. S. Veterans Hospital – Coatesville |
| Imperial Type Metals – Philadelphia |
U.S. Naval Damage Control Training Center |
| Impervious Varnish Co. – Rochester |
U.S. Steel Mill |
| Independence Hall 6Th Chestnut Streets Philadelphia |
U.S.S. Alderbaran – Chester |
| Independent Brewing Co. of Pittsburgh – Pittsburgh |
U.S.S. Hank – Chester |
| Independent Bridge Co. – Pittsburgh |
U.S.S. Hank Dd-702 – Chester |
| Independent Equipment Oakdale |
U.S.S. Vermilion – Chester |
| Independent Manufacturing Co. – Philadelphia |
Ugi Building – Philadelphia |
| Independent Metal Products – Uniontown |
UGI Building Philadelphia |
| Indiana Cold Storage & Ice Co. – Indiana |
UGIi Corp. – Lancaster |
| Indiana County Railways Co. – Homer |
Ukranian Cathedral – Chester |
| Indiana County Railways Co. Punxsutawney |
Underground McKees Rocks |
| Indiana Elementary School – Indiana |
Underground Pentagon Chambersburg |
| Indiana Erie Co. – Indiana |
Underwood Coal Co. Scranton |
| Indiana Hospital – Indiana |
Union Boiler Philadelphia |
| Indiana Jr. High School – Indiana |
Union Carbide – Castle Shannon |
| Indiana Provision Co. – Indiana |
Union Carbide – La Porte |
| Indiana State Teachers College – Indiana |
Union Carbide – St. Marys |
| Indiana University of Pennsylvania – Dormitories |
Union Carbide Carbon Corp. Coatesville |
| Indiana University of Pennsylvania – Garage Maintenance Building |
Union Carbide Carbon Corp. Duquesne |
| Industrial Air Conditioning – Philadelphia |
Union Carbide Carbon Corp. Kittanning |
| Industrial Cold Storage & Warehouse Co. – Philadelphia |
Union Carbide Carbon Corp. Pittsburgh |
| Industrial Div. Warehouse – Pittsburgh |
Union Carbide Caribe Corp. Guayanilla |
| Industrial Equipment Co. – Scranton |
Union Carbide Corp. – Harrisburg |
| Industrial Gasket & Shim Co. – Meadow Lands |
Union Coal Co. – Mt. Carmel |
| Industrial Insulation Sales Inc. – Erie |
Union Coal Co. Scott Colliery Mt Carmel |
| Industrial Steel Corp. Carnegie |
Union Coal Co. Shamokin |
| Industrial Valley Bank – Philadelphia |
Union Dish Co. – Bradford |
| Ingalls Iron & Steel – Verona |
Union Drawn Steel Co. – Beaver Falls |
| Ingersoll Band Co. Athens |
Union Electric – Burgettstown |
| Ingersoll Rand Co. Easton |
Union Electric Burgettstown |
| Ingersoll Sergeant Drill Co. – Easton |
Union Electric Carnegie |
| Ingersoll-Rand – Charleroi |
Union Electric Co. – Pittsburgh |
| Ingersoll-Rand Co. Athens |
Union Electric Steel – Burgettstown |
| Ingersoll-Rand Co. Easton |
Union Electric Steel Co. – Carnegie |
| Ingersoll-Rand Co. Pittsburgh |
Union Ice Co. – Pittsburgh |
| Ingo Portugalete |
Union Ironworks – Erie |
| Ingomar Community Methodist Church – Ingomar |
Union League Club – Philadelphia |
| Ingram Richardson Co. – Beaver Falls |
Union Metal Manufacturing – Stroudsburg |
| Inland Container Corp. Philadelphia Pahia |
Union Mills Paper Manufacturing Co. – New Hope |
| Inland Products – Pittsburgh |
Union Mining Corp. – Latrobe |
| Inland Products Herrs Island |
Union News Cafeteria – Pennsylvania Station |
| Inland Products Pittsburg |
Union Oil Co. Washington |
| Inland Products, Inc. – Pittsburgh |
Union Paving Co. Bridgeport |
| Inmetco – Ellwood City |
Union Paving Co. Philadelphia |
| Inn Of American – New Stanton |
Union Paving Co. Springhouse |
| Inn of American |
Union Railroad – Braddock |
| Inner Forest Darlington |
Union Railroad – Duquesne |
| Inolex Chemical Co. St Philadelphia |
Union Railroad Braddock |
| Inquirer Building Press Room – Philadelphia |
Union Railroad Roundhouse Monroeville |
| Insolite Refractories Co. Pittsburgh |
Union Refining Co – Warren |
| Instruction of the Blind |
Union Specialties – Verona |
| Insul – Wampum |
Union Specialty Steel – Verona |
| Insulation Sales Co. – Erie |
Union Spring Manufacturing Co. – New Kensington |
| Insulation Sales Co. Neville Island |
Union Spring Manufacturing Co. Pittsburgh |
| Insulation Sales Co. Pittsburgh |
Union Station – Pittsburgh |
| Insuldeck Corp. – Bath |
Union Steel Casting – Pittsburgh |
| Interlake Iron Co. – Erie |
Union Steel Co. – Donora |
| Internal Revenue Service Building – Philadelphia |
Union Steel Co. Pittsburgh |
| International Boiler Works Co. Stroudsburg |
Union Steel Pittsburgh |
| International Boiler Works Stroudsburg |
Union Supply Co. Pittsburgh |
| International Metals Co. Inmetco. – Ellwood City |
Union Switch & Signal – McKeesport |
| International Mill Co. Pittsburgh |
Union Switch & Signal Co. – Swissvale |
| International Mill Co. Tarentum |
Union Switch Signal – McKeesport |
| International Motor Co. Allentown |
Union Switch Signal – Swissville |
| International Motor Co. Penn Junction |
Union Traction Co. – Philadelphia |
| International Paper Co. Aldan Borough |
Union Trust Building Pittsburgh |
| International Paper Co. Alden |
Uniontown Demolition – Point Marion |
| International Paper Co. Container Division Waltz Mills |
Uniontown Drive- In – Uniontown |
| International Paper Co. Erie |
Uniontown Hospital – Union City |
| International Paper Co. Lock Haven |
Uniontown Housing Project – Uniontown |
| International Paper Co. Tonawanda |
Uniontown Nursing Home – Uniontown |
| International Paper Co. York Haven |
Uniontown Senior High School – Union City |
| International Service Ind. – Scranton |
Uniontown Senior High School Uniontown |
| International Shoe Co. – Philadelphia |
Uniontown Voctech – Uniontown |
| Interstate 80 – Titusville |
Uniroyal Rubber Co. – Philadelphia |
| Interstate Contracting & Coating Co. Zelienople |
Uniroyal Rubber Co. Philadelphia |
| Interstate Railways Co. – Philadelphia |
Unit Rail Anchor Corp. – Pittsburgh |
| Ionics Corp. Bridgeville |
United Artists Theatre Schuykill Mall – Frackville |
| Iowa Barbed Wire Co. – Allentown |
United Atkinson Inc – Erie |
| Ira B. Smay – Bradford |
United Church of Christ – Bethlehem |
| Iron City Heating Co. – Pittsburgh |
United Container Corp – Philadelphia |
| Iron City Imp. Co. – Pittsburgh |
United Container Corp. – Philadelphia |
| Iron City Industrial Cleaning Corp. Pittsburgh |
United Electric Co. – Lemoyne |
| Ironworkers Union – Philadelphia |
United Electric Co. Of America – Philadelphia |
| Iroquois Apartments – Pittsburgh |
United Engine & Foundry Co. – Pittsburgh |
| Irs Building – Philadelphia |
United Engineering – New Castle |
| Irvin Works Mifflin |
United Engineering & Foundry Co. Pittsburgh |
| Irving Works Steel Mill Pittsburgh |
United Engineering Foundry Co. Homestead |
| Irwin Schools – Irwin |
United Engineering Foundry Co. New Castle |
| Irwin Works – Dravosburg |
United Engineering Foundry Co. Pittsburgh |
| Irwin Works – Irwin |
United Engineering Foundry Co. Titusville |
| Isabella Furnace Co. – Etna |
United Engineering Foundry Co. Vandergrift |
| Isalys – Blvd of The Allied- Oakland |
United Engineering Pittsburgh |
| Isbrill & Co. – Philadelphia |
United Engineers & Constructors, Inc. Philadelphia |
| Isimbel Brothers Stable – Philadelphia |
United Engr Foundry Co. Pittsburgh |
| Island Generating Station Storeroom Pittsburgh |
United Engr Foundry Co. Vandergrift |
| Island Petroleum Co, Neville Island – Pittsburgh |
United Fraction Co. – Pittsburgh |
| Island Petroleum Co. – Nequehoning |
United Gas Improvement – Allentown |
| Island per Co. Carthage |
United Gas Improvement Co. Gas Plant Steelton |
| Island per Mill |
United Gas Improvement Co. Gas Works Philadelphia |
| Island Park Powerhouse |
United Gas Improvement Co. Germantown |
| Ite Circuit Breaker Co. – Philadelphia |
United Gas Improvement Co. Philadelphia |
| ITT Fluid Products – Lancaster |
United Gas Improvement Co. Wayne |
| ITT Fluid Products Corp. |
United Gilsonite Lab. – Scranton |
| Ivb Building – Philadelphia |
United Gilsonite Laboratory Scranton |
| Ivor J Lee Co. – Sharon |
United High School – Armagh |
| Ivy Rock Farm – Connellsville |
United Industrial Supply Co. – Erie |
| Ivy Rock Farm – Conshohocken |
United Metals Fabricating – Johnstown |
| J & C Nicholson Trustee – Ellwood City |
United Parcel – Bethel Park |
| J & L Co. Neville Island |
United Refining Co. – Warren |
| J & L Southside – Southfork |
United Roofing & Manufacturing Co. – Maple Glen |
| J & L Specialty Steel – Pittsburgh |
United States Steel Headquarters Building |
| J & L Steel – Ambridge |
United Steel & Wire – Wilkes Barre |
| J & L Steel – Hazelwood |
United Steel Barrell – Philadelphia |
| J & L Steel – Labelle |
United Steel Corp. Duquesne Works Duquesne |
| J & L Steel – Pittsburgh |
United Telephone Co. – Bedford |
| J & L Steel Golf Tower Gulf Oil Refinery – Pittsburgh |
United Traction Co. – Pittsburgh |
| J & R Meily – Lebanon |
Univ Atlas Cem Div Of Uss Corp. – Universal |
| J & W Yewdall – Philadelphia |
Univ. Welding – Export |
| J North F. Wilcox – Pittsburgh |
Universal Atlas Cement – North Hampton |
| J. A. Dougherty’s Sons – Philadelphia |
Universal Atlas Cement Pittsburgh |
| J. A. Kohlhepp Sons Du Bois |
Universal Atlas Cement Plant – Universal |
| J. B Eurell Co. Lansdowne |
Universal Atlas Cement Universal |
| J. B Kelly Construction – Philadelphia |
Universal Atlas North Hampton |
| J. B Van Sciver – Abington |
Universal Atlas U. S. Steel Corp. Universal |
| J. B. Ellison & Sons – Philadelphia |
Universal Cement Plant – Penn Hillsplum Boro |
| J. B. Lippincott Building – Philadelphia |
Universal Cyclops – Bridgeville |
| J. B. LippIncott Building Philadelphia |
Universal Cyclops Corp. Bridgeville |
| J. B. Swayne & Son – Kettett Square |
Universal Cyclops Corp. Pittsburgh |
| J. B. Veatch Truck Station 103 Aliquippa |
Universal Cyclops Corp. Titusville |
| J. Bishop & Co. – Malvern |
Universal Cyclops Office Building – Mt. Lebanon |
| J. C. Graham & Co. – Philadelphia |
Universal Cyclops Steel Co. – Titusville |
| J. C. Greenwood Association, Inc. – Belle Vernon |
Universal Cyclops Steel Corp. – Pittsburgh Works Pittsburgh |
| J. C. Grover & Sons – Philadelphia |
Universal Cyclops Steel Corp. – Works Pittsburgh |
| J. C. Klauder Estate – Philadelphia |
Universal Cyclops Steel Mill Titusville |
| J. C. McDowell – Pittsburgh |
Universal Dye Works – Philadelphia |
| J. C. Penney Store |
Universal Dye Works Tacony |
| J. D Fenny Co. – Harrisburg |
Universal Elec. & Manufacturing. Co. – Johnstown |
| J. D Grover & Sons – Philadelphia |
Universal Insulation Co. – Philadelphia |
| J. D. Ferry Co. – Harrisburg |
Universal Oil Products- Kendall Refining Co. – Bradford |
| J. D. Grover & Sons – Philadelphia |
Universal Rubber Co. Products Co. Zelienople |
| J. D. Morrissey Inc. – Philadelphia |
Universal Rundle Co. Machine Plant New Castle |
| J. E Potter & Co. – Philadelphia |
Universal Rundle Co. Mahoningtown |
| J. E. Baker Co. – Billmayer |
Universal Rundle Co. New Castle |
| J. E. Baker Co. York |
Universal Rundle Co. VC Plant Mahoningtown |
| J. E. Patterson – Wilkes Barre |
Universal Werehouse – Philadelphia |
| J. E. Patterson & Co. – Pittston |
University Atlas Cement Pittsburgh |
| J. E. Potter & Co. – Philadelphia |
University City High School – Philadelphia |
| J. F. Betz & Sons – Philadelphia |
University Club – Philadelphia |
| J. F. Buchanan & Co. – Philadelphia |
University Of Pennsylvania – Indiana |
| J. Fred Talbott – Philadelphia |
University of Pennsylvania Admin Building Philadelphia |
| J. G. Brill & Co. – Philadelphia |
University of Pennsylvania Dental School Philadelphia |
| J. G. Brill Co. – Grays Ferry |
University of Pennsylvania Gymnasium Philadelphia |
| J. G. Brill Co. Philadelphia |
University Of Pennsylvania Hospital – Philadelphia |
| J. G. White & Co. Palo Alto |
University of Pennsylvania Hyperbaric Facilities Philadelphia |
| J. H Michener & Co. – Philadelphia |
University of Pennsylvania Hyperbarric Test Complex Philadelphia |
| J. H. & C.K. Eagle Co. – Shamokin |
University of Pennsylvania Law School Philadelphia |
| J. H. Michener & Co. – Philadelphia |
University of Pennsylvania Liberal Arts Philadelphia |
| J. H. Sternbergh & Son – Reading |
University of Pennsylvania Maloney Building Philadelphia |
| J. H. Wilcox – Chester |
University of Pennsylvania Medical Center Philadelphia |
| J. J. De Kinder – Philadelphia |
University of Pennsylvania Medical Center, Residence Building Philadelphia |
| J. J. Felin Co. Inc. – Nicetown |
University of Pennsylvania Medical Laboratory Philadelphia |
| J. J. Vandergrift – Pittsburgh |
University of Pennsylvania Medical School Philadelphia |
| J. J. White Co. – Maple Glen |
University of Pennsylvania Museum Philadelphia |
| J. K Wright & Co. – Philadelphia |
University of Pennsylvania Operating Room Philadelphia |
| J. K. Mosser Co. – Noxen |
University of Pennsylvania Penthouse Philadelphia |
| J. K. Wright & Co. – Philadelphia |
University of Pennsylvania Social Science Center Philadelphia |
| J. L Steel Aliquippa |
University of Pennsylvania Steam Distribution System Philadelphia |
| J. L Steel Labelle |
University of Pennsylvania Therapeutic Laboratory Philadelphia |
| J. Langdon & Co. Inc. – Shamokin |
University of Pennsylvania Veterinary School Philadelphia |
| J. Mundell & Co. – Philadelphia |
University of Pittsburgh – Applied Research Center |
| J. P. Maloney – Scranton |
University of Pittsburgh – Bradford Campus – Bradford |
| J. R Whitting Power Plant |
University of Pittsburgh – Cathedral of Learning Pittsburgh |
| J. S. & T. Elkinton – Philadelphia |
University of Pittsburgh – Clapp Hall |
| J. S. Wentz – Mauch Chunk |
University of Pittsburgh – Falk Clinic |
| J. T. Bennett Co. – Philadelphia |
University of Pittsburgh – Field House |
| J. W Arrott – Pittsburgh |
University of Pittsburgh – Greensburg |
| J. W Koch Co. – Harrisburg |
University of Pittsburgh – Gulf Research – Harmarville |
| J. W. Arrott – Pittsburgh |
University of Pittsburgh – Heating Plant |
| J. W. Ivory Co. – Philadelphia |
University of Pittsburgh – Hillman Library |
| J. W. Koch Co. – Harrisburg |
University of Pittsburgh – Johnstown Campus – Johnstown |
| J. W. Rex Co. – Lansdale |
University of Pittsburgh – Lothrop Hall |
| J. Wood Co. Conshocken |
University of Pittsburgh – Main Campus Buildings |
| Jabi Restaurant – Charleroi |
University of Pittsburgh – Medical Center |
| Jack Frost Sugar Co. – Philadelphia |
University of Pittsburgh – Medical School |
| Jack S Pharmacy – Meadville |
University of Pittsburgh – Music Building |
| Jacob H. Bowers Trappe |
University of Pittsburgh – Pittsburgh |
| Jacoby Heating Inc – Harrisburg |
University of Pittsburgh – Salk Hall |
| James C Morrissey – Philadelphia |
University Of Pittsburgh – Scaiffe Hall |
| James H. Reed Power Station – Pittsburgh |
University of Pittsburgh – Schenley Hall |
| James Irwin & Co. – Pittsburgh |
University of Pittsburgh – School of Health |
| James L. Stuart – Pittsburgh |
University of Pittsburgh – Stadium |
| James Lees & Sons Co. – Bridgeport |
University of Pittsburgh – Student Union |
| James Martin & Co. – Philadelphia |
University of Pittsburgh – The Graduate School |
| James McKay Co. – McKees Rocks |
University of Pittsburgh – Towers |
| James P Wood Heating Co. – Philadelphia |
University of Pittsburgh – Western Psychiatric |
| James Reed Power Station – Pittsburgh |
University Of Pittsburgh, Applied Research Center – Harmaville |
| James S. Wilson Junior High School – Erie |
University Square Condominiums – Pittsburgh |
| James Wolfenden – Lock Haven |
University Welding Export |
| Jameson Coal & Coke Co. Crab Tree |
Upmc McKeesport – McKeesport |
| Jameson Coal & Coke Co. Greensburg |
Upmc St. Margaret – Lawrence |
| Jameson Memorial Hospital – New Castle |
Upper Darby High School – Drexal Hill |
| Jamestown Hospital – Jamestown |
Upper Milford School – Upper Milford |
| Jamison Coal & Coke Co. Crab Tree |
Upper Mount Bethel |
| Jamison Coal & Coke Co. Forbes Road |
Upper Sind Plant Sukkur |
| Jamison Coal & Coke Co. Greensburg |
Upper St. Clair High School – Upper St. Clair |
| Jamison Coal & Coke Co. Hannastown |
Upper St. Clair Municipal Building – Upper St. Clair |
| Jamison Coal & Coke Co. Luxor |
Upshur Philadelphia |
| Jamison Coal & Coke Co. Pittsburgh |
Ursinus College- Dining Room – Collegeville |
| Janney Cylinder – Philadelphia |
USA Box Eighty-Four |
| Jannison Coal & Coke Co. Forbes Road |
Usg Sun Shipbuilding Drydock Chester |
| Januty Silk Co. Inc. – Scranton |
Uss Chemicals – Nequehoning |
| Jas F Pennell Co. |
Uss Headquarters – Pittsburgh |
| Jas. Bonar & Co. – Pittsburgh |
Usx Corp. – Pittsburgh |
| Jaunty Fabric Corp. – Scranton |
USX Fairless Hills |
| Jawood Lukens – Connellsville |
USX Headquarters – Pittsburgh |
| Jawood Lukens Conshohocken |
Usx Irving Works – Pittsburgh |
| Jayval Marine Corp. – Girard Point |
Usx Irving Works Mifflin |
| Jb Ellison & Sons – Philadelphia |
USX Morrisville |
| JC Penney – Beaver Falls |
USX Steel Dravosburg |
| JC Penney – Donora |
Usx Steel Mill – Brakenridge |
| JC Penney – Johnstown |
USX Steel Mill Clairton |
| Jeannette District Memorial Hospital – Jeannette |
USX Steel Mill Fairless Hills |
| Jeannette Glass Co. – Jeannette |
Usx Steel, Clairton Works – Pittsburgh |
| Jeannette Shade & Novelty Co. – Jeannette |
V. C. Golden – Pittsburgh |
| Jeddo Highland Coal Co. – Jeddo |
V. L. Cavannas & Co. Philadelphia |
| Jefferson & Clearfield Coal & Iron Co. – Ernest |
V. L. Cavannas Co. – Philadelphia |
| Jefferson Coal Co. – Coal Gle |
Valetti Marine Supply Philadelphia |
| Jefferson Court Mall – Washington |
Valk Manufacturing – Carlisle |
| Jefferson Elementary School – Clairton |
Valley Camp Coal Co. Oil City |
| Jefferson Hospital – Philadelphia |
Valley Camp Coal Co. Poland |
| Jefferson Medical Center – Clairton |
Valley Corp. – Ardmore |
| Jefferson Medical College – Philadelphia |
Valley Electric Co. – Fallston |
| Jefferson Medical College Hospital, White Haven Div. |
Valley Electric Co. New Brighton |
| Jenny Cylinder – Philadelphia |
Valley Elementary School – Jefferson Hills |
| Jere Woodring & Co. – Hazleton |
Valley Forge Hospital – Phoenixville |
| Jermyn & Co. – Pittston |
Valley Forge State Park – Valley Forge |
| Jermyn Boiler House – Jermyn |
Valley Ice Co. – Beaver Falls |
| Jersey Bar & Grill – New Brighton |
Valley Maid Inc. Phoenixville |
| Jersey Cereal Food Co. – Irwin |
Valley Mill – Colplay |
| Jersey Shore Electric Street Railway Co. – Jersey Shore |
Valley Mould & Iron Co. – Sharpsville |
| Jersey Shore Steel Co. – Avis |
Valley Steel – Duquesne |
| Jesse W. Starr Jr. – Philadelphia |
Valley Supply Phillipsburg |
| Jessop Specialty Steel Mill – Washington |
Valley Traction Co, Lemoyne – Cumberland County |
| Jessop Steel Co. – Washington |
Valley Traction Co. – Bridgeport |
| Jessop Steel Plant Washington |
Valley Traction Co. Lemoyne Cumberland County |
| Jessup & Moore, Chester Mills – Modena |
Valvoline Oil Co. – Freedom |
| Jetronic Industries – Philadelphia |
Valvoline Oil Refinery Freedom |
| Jewish Home for The Aged – Philadelphia |
Van Brunt Co. Philadelphia |
| Jewish Hospital – Philadelphia |
Van Dorn Co. Heat Tire – McKees Rocks |
| Jewish Temple – Allentown |
Van Horn Ely – New Brighton |
| JF Pennell Co. |
Vanadium Alloys Steel Co. – Latrobe |
| JH France Refractories Co. Snow Shoe |
Vanadium Alloys Steel Co. Monaca |
| Jim Dowdy Cadillac Oldsmobile – Ambridge |
Vanadium Steel Vanadium Works – Bridgeville |
| Jim Walters Co. – Somerset |
Vanadium Steel Works – Bridgeville |
| JJ White Jack Smith Fairless Works Morrisville |
Vandergrift Construction Co. – Philadelphia |
| JL Republic Hazelwood Pittsburgh |
Vandergrift Electric Light & Power Co. – Vandergrift |
| Jl Steel Ambridge |
Vandergrift Elementary School, Vandergrift |
| Jl Steel South Side Plant Pittsburgh |
Vandergrift Land & Improvement Co. – Vandergrift |
| Jl-LTV Steel Aliquippa |
Vare Junior High School – Philadelphia |
| JNO A. Rigg Philadelphia |
Vasco – Latrobe |
| Jobes St. – Elco |
Vasco Monaca |
| Joel J. Bailey & Co. – Philadelphia |
Vaugh Sanitary Bakery – Berwick |
| John A. Rigg Lebanon |
Vault Co. – Connellsville |
| John A. Rigg Reading |
Vciti Corp. Venture Capital Latrobe |
| John B. Kelly Construction – Philadelphia |
Veltry Cleaners Washington |
| John B. Stetson Co. – Philadelphia |
Venezuela Gulf Refining C Pittsburgh |
| John Bartram Senior High School – Philadelphia |
Venezuela Gulf Refining Pittsburgh |
| John Bistelson Co. – Philadelphia |
Venus Pen & Pencil – Erwinburg |
| John Bromley & Sons – Philadelphia |
Verizon Wireless – Cranberry |
| John Brown’s Sons – Philadelphia |
Vernon Textile Co. – Philadelphia |
| John Cohen Clothes – Philadelphia |
Vertal Division Eddystone |
| John David Co. – Philadelphia |
Vertol Div Boeing Co. Eddystone |
| John Dimling – Pittsburgh |
Vesta Coal Co. – Allenport |
| John F. Casey, Inc. Butler |
Vesta Coal Co. Brownsville |
| John F. Casey, Inc. Pullman Standard – Butler |
Vesta Coal Co. California |
| John Harrison Co. Pittsburgh |
Vesta Coal Co. Pittsburgh |
| John J Kane Hospital – Pittsburgh |
Vesta Furnace Harrisburg |
| John J. Kane Hospital – Bridgeville |
Vesuvius Crucible Co. – Pittsburgh |
| John J. Kane Hospital – McKeesport |
Veterans Administration Hospital – Pittsburgh |
| John Lang Paper Co. – Philadelphia |
Veterans Hospital – Altoona |
| John Lang Philadelphia |
Veterans Stadium – Philadelphia |
| John M Grasse Elementary School – Hilltown |
Vick Manufacturing Division – Philadelphia |
| John Moffet Elementary School – Philadelphia |
Victor Balata Plant – Easton |
| John Mundell & Co. – Philadelphia |
Victor Barward Industries – Philadelphia |
| John Potero Co. – Philadelphia |
Victor Box Co. Quakertown |
| John R. Ellison & Sons Shop – Butler |
Victor Chemical Works – Morrisville |
| John R. Ellison Sons Shop – Butler |
Victor Chemical Works Morrisville |
| John S. Pepson – Union City |
View Jr. High School – View |
| John Tack & Sons – Butler |
View Water Authority – Neville Island |
| John Tearney Heating & Plumbing – Lancaster |
Viko Furniture Eldred |
| John Tyson – Moodville |
Villanova College – Villanova |
| John Veith Colliery – Minersville |
Villanova University – Villanova |
| John Wanamaker Department Store – Philadelphia |
Villanova University New Law School Building Villanova |
| John Wanamaker Store – Kimberton |
Villanova University New Law School Villanova |
| John Wood Manufacturing Co. – Connellsville |
VIncents Pizza Pub – Trafford |
| John Wood Manufacturing Co. – Conshohocken |
Vine Street Towers – Johnstown |
| John Yewdall Keystone Mills Philadelphia |
Vinton Colliery Co. – Vintondale |
| John Zimmermann & Sons – Philadelphia |
Virginia Plate Glass Co. Pittsburgh |
| John-David Co. – Philadelphia |
Virginia Power Transmission Co. – Cheat Haven |
| Johnny’s Gas Station – Ambridge |
Virginia Pulp & Paper Co. – Tyrone |
| Johns-Manville Corp. Pittsburgh |
Virginia Pulp & Paper Co. Tyrone |
| Johns-Manville Corp. Whitehall |
Virginia Pulp & Paper Co. Williamsburg |
| Johns-Manville Production Corp. Zeleinople |
Virginia Pulp Paper Co. Tyrone |
| Johnson & Co. – Johnstown |
Virginia Pulp Paper Tyrone |
| Johnsonburg Elementary School – Johnsonburg |
Virginia Railway Co. |
| Johnsonburg Paper Mill – Johnsonburg |
Visco Corp. General Foods – Meadowville |
| Johnsonville Naval Air & Research Center – Philadelphia |
Visco Marcus Hook |
| Johnston Foundry – Grove City |
Viscose Co. – Maple Glen |
| Johnston The Florist Irwin |
Viscose Co. Meadville |
| Johnstown America Corp. – Johnstown |
Vitro Metals Canonsburg |
| Johnstown City Hall – Johnstown |
Vitro Re Metals – Canonsburg |
| Johnstown Coke Oven |
Vocational Technical School – Delaware City |
| Johnstown Corp. – Johnstown |
Volkswagen Plant – New Stanton |
| Johnstown Elementary School – Johnstown |
Vornhold Wall Paper – Hulmeville |
| Johnstown High School – Johnstown |
Vosters Nurseries – Secane |
| Johnstown Stonycreek Railroad – Johnstown |
Vo-Tech – Johnstown |
| Johnstown Water Authority – Johnstown |
Voyager Inn – Franklin |
| Johnstown Water Co. – Johnstown |
Vtasty Baking Co. Inc – Philadelphia |
| Johnstown Works Powerhouse Johnstown |
Vulcan Detinning Co. – Nequehoning |
| Jonathan Ring & Son – Philadelphia |
Vulcan Detinning Co. – Neville Island |
| Jones & Laughlin Steel Co. Aliquippa |
Vulcan Foundry & Machine Co. – New Castle |
| Jones & Laughlin Steel Co. Braddock |
Vulcan Mold – Latrobe |
| Jones & Laughlin Steel Co. Eliza |
Vulcanite Paving Co. – Philadelphia |
| Jones & Laughlin Steel Co. Pittsburgh |
Vulcanized Rubber & Plastics Co. – Morrisville |
| Jones & Laughlin Steel Co. Pittsburgh |
W Devees Wood Co. – Pittsburgh |
| Jones & Laughlin Steel Co. Woodlawn |
W M H Roper Co. Forrest Hills |
| Jones & Laughlin Steel Co. Works Station Pittsburgh |
W M H Rorer Co. Fort Washington |
| Jones & Laughlin Steel Corp. – Elizabeth |
W R Grace & Co. New Castle |
| Jones & Laughlin Steel Corp. – Vestaburg |
W Rose Inc. Sharon Hill |
| Jones & Laughlin Steel Corp. Solo Works Pittsburgh |
W S Rockwell Co. Chalfont |
| Jones & Laughlin, Limited Pittsburgh |
W. C. Hamilton & Son – Lafayette |
| Jones & Laughline Steel Co. – Woodlawn |
W. C. Hamilton & Sons – Philadelphia |
| Jones & Lockland Steel Mills – Johnstown |
W. Conschohocken Co. |
| Jones & Loughlin Steel Corp. – Aliquippa |
W. D. Reiniger & Sons – Hatboro |
| Jones Junior High School – Philadelphia |
W. Dewees Wood Co. – McKeesport |
| Jones Laborlin Steel Pittsburgh |
W. F. Mosser & Son – Allentown |
| Jones Laughlin Steel Braddock |
W. F: Mosser & Son – Allentown |
| Jones Laughlin Steel Co. Eliza Furnaces Pittsburgh |
W. G Payne & Co. Kingston |
| Jones Laughlin Steel Co. Hazelwood |
W. G. Balph Co. – Pittsburgh |
| Jones Laughlin Steel Co. LTV Steel Aliquippa |
W. G. Payne & Co. – Kingston |
| Jones Laughlin Steel Co. LTV Steel Pittsburgh |
W. G. Pennypacker – Philadelphia |
| Jones Laughlin Steel Co. Vestaburg |
W. G. Wilkins Co. – Pittsburgh |
| Jones Laughlin Steel Corp. Coke Oven Plant Aliquippa |
W. Glyde Wilkins, C. E. Pittsburgh |
| Jones Laughlin Steel Corp. Southside Works Pittsburgh |
W. H. Grundy & Co. Bristol |
| Jones Laughlin Steel Hazelwood- Pittsburgh |
W. H. Haws Fire Brick Co. – Mt. Union |
| Jones Lockland Steel Mills – Johnstown |
W. H. Luden – Reading |
| Jordan Park Apartments- Boiler House – Fullerton |
W. H. Piper & Co. – Lilly |
| Joseph & Thropp – Earlston |
W. H. Piper & Co. – Philadelphia |
| Joseph Berliner Co. – Philadelphia |
W. J. Hollis – Reading |
| Joseph Butene – Bradford |
W. J. Hunt Carlisle |
| Joseph Campbell Pet Foods – Lime Ridge |
W. J. Lawlor – Quakertown |
| Joseph Heacokc – Wyncote |
W. J. Mccahan Sugar Refining & Molasses Co. – Philadelphia |
| Joseph Horne & Co. – Pittsburgh |
W. J. Rainey Co. – Connellsville |
| Joseph R. Foster Sons – Philadelphia |
W. K. Niver Coal Co. – Berlin |
| Joseph S. Finch & Co. – Schenley |
W. M. Anderson – Philadelphia |
| Joseph S. Finch Co. – Pittsburgh |
W. Newton Co. |
| Josephine Furnace & Coke Co. – Josephine |
W. P. Duckworth Lansdowne |
| Joy Manufacturing – Franklin |
W. P.O. Railroad – Philadelphia |
| Joy Manufacturing New Philadelphia |
W. R. Grace – Ellwood City |
| Joy Manufacturing Reno |
W. R. Grace – New Castle |
| JP Austin Associated Inc. Pittsburgh |
W. R. Mcturk Coal Co. – Girardville |
| Js & T Elkinton – Philadelphia |
W. T. Grant Stores – Belle Vernon |
| Jsta. #30 – S.S. Boiler House – Pittsburgh |
W. W. Armstrong Inc. – Carnegie |
| Julius Kayser Co. Crown Plant – Bangor |
W. W. Darley – Pittsburgh |
| Juniata Co. – Mufflintown |
W. W. Harrison Glenside Station |
| Juniata County School District Mifflintown |
Wabash Pitts Railroad Powerhouse – Pittsburgh |
| Juniata Furnace & Foundry Co. – Newport |
Wabash Pittsburgh Terminal – Pittsburgh |
| Junior High School – Dubois |
Wager & Cox – Bridgeport |
| Junior High School Aliquippa |
Wager & Cox Bridgeport |
| Justi Division W. Gold Refinery Philadelphia |
Wagoners E C Sons Beaver Falls |
| K & L Refractory Service – Erie |
Walgreens – Chippewa Township |
| K L Refractory Service Erie |
Walker & Keplar – Philadelphia |
| K& J Coal Co. – Hastings |
Wall & Shand, Duke & Vine Sts. – Lancaster |
| Kabuda Synthetic Rubber Co. Plant – Monaca |
Wallace Junior High School – Baldwin |
| Kaiser Engineers Bristol |
Wallace- Murray Scranton |
| Kaiser Job – Butler |
Wallace Run Plant |
| Kaiser Metal – Bristol |
Wallace-Murray – Scranton |
| Kamak Mills Kulpmont |
Walnut Steam Heat Station Harrisburg |
| Kane Area Junior High School – Kane |
Walster Corp. – Lackawanna County |
| Kane Hospital – McKeesport |
Walters Cabinets – Oakmont |
| Kane Hospital – Ross |
Waltz Mills – Yukon |
| Kane School 26Th Jefferson Philadelphia |
Walworth Manufacturing Greensburg |
| Kanmak Mills – Kulpmont |
Wampum Cement Plant Wampum |
| Karl Lieberknecht Inc. Reading |
Wanamaker Garage – Philadelphia |
| Karl R.H. Knapp, Inc. – McKees Rocks |
Wanamaker’s Cottman Avenue Philadelphia |
| Karns City Refinery Karns City |
Wanamie #18 Colliery Wanamie |
| Karns City School Karns City |
Ward S Bakery – Lawrenceville |
| Katz Underwear Co. – Honesdale |
Warden Frew & Co. – Philadelphia |
| Kaufman Building – Pittsburgh |
Warehouse Montgomery |
| Kaufmanns Dept. Store – Altoona |
Waren State Boiler House |
| Kaufmanns Dept. Store – Erie |
Wark Army Supply – Philadelphia |
| Kaufmanns Dept. Store – Monroeville |
Warner Co. – Bellefonte |
| Kaufmanns Dept. Store – North Hills |
Warner Co. Bellefonte Division Bellefonte |
| Kaufmanns Dept. Store – South Hills Village |
Warner Co. Cedar Hollow Cement Plant Devault |
| Kaufmanns Dept. Store – Westmoreland Mall – Greensburg |
Warner Co. De Vault |
| Kaufmanns- Monroeville |
Warner Co. Philadelphia |
| Kaufmans Department Store – Pittsburgh |
Warner Concrete Plant – Devault |
| Kaul Memorial Hospital – St. Marys |
Warner Lambert Laboratory Lititz |
| Kawecki Berylco Hazelton |
Warner Lambert Pharmaceutical Co. – Lititz |
| Kawecki Berylco Industries Reading |
Warren Generating Station – Starbrick |
| Kawecki Berylco Industries Temple |
Warren Power Plant – Kinzua Dam Warren |
| Kawecki Berylco Industries, Inc. Boyertown |
Warrick Greenhouse – Washington |
| Kawecki Chemical Co. Boyertown |
Warrior Run School – Sunberry |
| Kawecki Chemical Co. Hoovertown |
Warwick Iron & Steel Co. – Pottstown |
| Kawecki Chemical Co. Reading |
Warwick Mine – Greene County |
| Kawecki Chemical Co. Rupertown |
Washburn & Zerfass – Scranton |
| Kaweener Co. – Bloomsburg |
Washburn, Williams & Co. – Scranton |
| Kaweener Co. Harrisburg |
Washington & Jefferson Elementary School – Altoona |
| Keasbey & Mattison – Philadelphia |
Washington Ave. Plant – Scranton |
| Keasbey & Mattison Co. – Ambler |
Washington Center – New Castle |
| Keebler Biscuits Co. – Philadelphia |
Washington Coal & Coke Co. – Star Junction |
| Keenan Co. – Philadelphia |
Washington Coal & Coke Co. Uniontown |
| Keene Corp. – Valley Forge |
Washington County Courthouse Square – Washington |
| Keibler Industries – New Kensington |
Washington Electric Light & Power Co. – Washington |
| Keibler Thompson Corp. – Export |
Washington Elementary School – Greenville |
| Keller Creamery – Harleysville |
Washington Elementary School – Washington |
| Kelloggs Co. Lancaster |
Washington Health Center – Washington |
| Kellogs Chemical Plant – Oil City |
Washington Hi- Rise – Washington |
| Kelly & Jones Co. – Greensburg |
Washington High School – Lilly |
| Kelly & Jones Co. Pittsburgh |
Washington High School – Washington |
| Kelly & Ludwig – Philadelphia |
Washington Housing Project – Washington |
| Kelly School – Wilkinsburg |
Washington Ice Co. Washington |
| Kelly Wooden Ware Co. Waterford |
Washington Jefferson College – Washington |
| Kelsey Hayes Wheel Co. – McKeesport |
Washington Jefferson Elementary School – Altoona |
| Kem Weld rt B Kemax Part B |
Washington Mall Washington |
| Kemble Iron Co. – Riddlesburg |
Washington Mold Machine Foundry Co. Washington |
| Kemmerer Iron & Steel Co. – Scranton |
Washington Plaza – Washington |
| Kendall Oil Co. Bradford |
Washington Powerhouse – Danville |
| Kendall Refining Bradford |
Washington Sewage Collection System – Washington |
| Kendall Refining Co. – Bradford |
Washington Sewage Treatment Plant – Washington |
| Kenna Metal – Latrobe |
Washington Steel – Houston |
| Kennametal, Inc. – Latrobe |
Washington Steel & Ordinance Co. Uniontown |
| Kennedy Ebensburg Center – Ebenburg |
Washington Steel & Ordnance Co. – Union City |
| Kennedy Ebensburg Center – PA |
Washington Steel Co. – Washington |
| Kennedy Van Saun – Warner Devault |
Washington Steel Houston |
| Kennedy Van Saun Danville |
Washington Steel Mill – Washington |
| Kennedy, Ebensburg Center Ebensbug |
Washington Tin Plate Co. – Washington |
| Kennett & Wilmington Electric Railway Co. |
Washington Tool & Machine Co. – Washington |
| Kennett Square |
Washington Tool Washington |
| Kennett Wilmington Electric Railway Co. Kennett |
Washington Vocational School – Lawrenceville |
| Kennywood Park – Mifflin |
Washingtonville Power Plant |
| Kensington Water Co. New Kensington |
Washingtonville Power Plant Washingtonville |
| Kenyon Theatre North Side – Pittsburgh |
Water & Power Development Authority, Sukkur |
| Kepler Mills Easton |
Water Co. – Castle Shannon |
| Keplers Fuel Co. Easton |
Water Treatment Plant – Carmichaels |
| Keppars Co. Petrolia |
Water Treatment Plant – Connellsville |
| Kepper Mountain Power Station – Scranton |
Water Treatment Plant – Hawk Run |
| Ketchum Communications Holding Pittsburgh |
Water Treatment Plant – Lewiston |
| Keystone Asbestos Magnesia Co. – Etna |
Water Treatment Plant – New Castle |
| Keystone Box Co. – Sharpsburg |
Water Treatment Plant – South Fayette |
| Keystone Brewers, Inc. – Pittsburgh |
Water Works Construction Co. & Eastern Tube Co. – Pittsburgh |
| Keystone Cement Bath |
Water Works North-Philadelphia |
| Keystone Coal & Coke Co. Dundale |
Water Works South-Philadelphia |
| Keystone Coal & Coke Co. Ellsworth |
Waterworks Mall – Fox Chapel |
| Keystone Coal & Coke Co. Greensburg |
Watson Lands Lumber Co. – Mayburg |
| Keystone Coal & Coke Co. Madison Mines |
Watson Standard – Millvale |
| Keystone Coal & Coke Co. Madison |
Watsontown Door & Sash Co. Watsontown |
| Keystone Coal & Coke Co. New Alexandria |
Waxman Plumbing – Pittsburgh |
| Keystone Construction Co. – Huntingdon |
Wayne Construction Co. – Greensburg |
| Keystone Drawn Steel – Spring City |
Wayne County Memorial Hospital – Honesdale |
| Keystone Drydock – Philadelphia |
Wayne Crouse Shop – Dorseyville |
| Keystone Elementary School – Knox |
Wayne Crouse, Inc. – Butler |
| Keystone Engineering Co. – Pittsburgh |
Wayne Feed Co. – Emerson |
| Keystone Generating Station – Plumcreek |
Wayne Ironworks – Pittsburgh |
| Keystone Generating Station Elderton |
Waynesburg Central Greene School – Waynesburg |
| Keystone Generating Station Unit 1 & 2 Elderton |
Waynesburg Electric Light & Power Co. Waynesburg |
| Keystone Generation Station Unit 1 – Alum Creek Township |
Waynesburg High School – Waynesburg |
| Keystone Pipe & Supply – Butler |
Waynesburg Prison – Waynesburg |
| Keystone Plantation – Wyoming |
Wean United Engineering Vandergrift |
| Keystone Portland Bath |
Wean United Foundry Vandergrift |
| Keystone Portland Cement Co. – Bath |
Weathercraft Insulation Co. – Philadelphia |
| Keystone Portland Cement Philadelphia |
Weatherspoong Building – Philadelphia |
| Keystone Power Plant – Indiana |
Weaver Elementary School – South Park |
| Keystone Power Station – Shelocta |
Webster Coal & Coke Co. – Amsbry |
| Keystone Project, Clairton Works – Clairton |
Webster Coal & Coke Co. Ehrenfeld |
| Keystone Project, Westinghouse Electric – Elderton |
Webster Coal & Coke Co. Philadelphia |
| Keystone Resources – Mars |
Webster Coal & Coke Co. Scranton |
| Keystone Roofing Co. – York |
Webster Furnace – Philadelphia |
| Keystone Roofing Manufacturing Co. – York |
Weeks Brothers – Pittsburgh |
| Keystone Shaft Mine – Madison |
Weigal Buick – Braddock |
| Keystone Station Units #1 #2 Armstrong County Shelocta |
Weightman Building – Philadelphia |
| Keystone Station Units 1 & 2 Westinghouse Turbines Shelocta |
Weightman Estate – Philadelphia |
| Keystone Wire & Iron – Huntingdon Valley |
Weil McClain – Erie |
| Keystone Woolen Mills – Connellsville |
Weinberg Louis & Marion – Philadelphia |
| Keystone Woolen Mills Conshohocken |
Weirton Steel – McKees Rocks |
| Keystone, Ebensburg Center Ebensbug |
Weirton Steel Browns Island McKees Rocks |
| Khulna Newsprint Mill Khulna |
Weirton Steel McKees Rocks |
| Kibbe, Chaffie & Co. – Philadelphia |
Weitz & Malano Pennzoil |
| Kibbes Specialty Contractors S. Williamsport |
Welch Grape Juice Co. – North East |
| Kieter Magee – Magee Carpet Co. – Bloomsburg |
Welding Engineers – Norristown |
| Kilsdonk Chemical Drake Chemical – Lock Haven |
Wellman – Seaver Morgan Co. – Erie |
| Kim Bob Construction – Harrisburg |
Wellman-Seaver Morgan Co. – Erie |
| Kimberly Clark Corp. – Mt. Holly Springs |
Wellsboro Electric Co. Wellsboro |
| Kim-Bob Construction – Harrisburg |
Welsbach – State Correctional Institute |
| King Keystone – Warren |
Welsbach State Correctional Inst. Boiler Plant White Haven |
| King Of Prussia – Kimberton |
Welsh Grape Juice Co. North East |
| King Of Prussia Shopping Center – Kimberton |
Wenster Coal & Coke Co. Amsbry |
| Kingan & Co. Limited Philadelphia |
Wernersville State Hospital – PA |
| Kingston Coal Co. Number 2 & 4 Shaft Kingston |
Wertz Engineering Co. – Allentown |
| Kingston Colleries |
Wessell Hardware Corp. Philadelphia |
| Kingston Electric Co. – Swiftwater |
West. Virginia Plate Glass Co. – Pittsburgh |
| Kingston Power Station – Oliphant |
Westerly Parkway School – Star Junction |
| Kinny Shoe Factory – Carlisle |
Westerly Parkway School State College |
| Kinsey Distilling Co. – Linfield |
Western Beaver High School – Beaver |
| Kinzua Dam – Warren |
Western Electric Co, Inc. – Laureldale |
| Kiski Area High School – Vandergrift |
Western Electric Co. Allentown Works Allentown |
| Kiskiminetas Springs School – Kiskiminetas |
Western Electric Co. Allentown Works |
| Kittanning Brick & Fire Clay Co. – Pittsburgh |
Western Electric Co. Coo Lauderdale |
| Kittanning Ceramics Co. – Kittanning |
Western Electric Co. Inc. – Allentown |
| Kittanning Coal Co. – Kittanning |
Western Electric Co. Liberty |
| Kittanning Country Club – Kittanning |
Western Electric Co. Reading |
| Kittanning Courthouse – Kittanning |
Western Electric Co. Repair Facility King of Prussia |
| Kittanning Plate Glass Co. – Kittanning |
Western Electric Corporation – Beaver |
| Kittanning School – Kittanning |
Western Metal Bed Co. – Philadelphia |
| Klien Chocolate Co. Elizabethtown |
Western Penn Beaver City |
| Klimek – Sewickley |
Western Penn Pittsburgh |
| Klur Frank Co. Pittsburgh |
Western Penn Shippingport |
| K-Mart Altoona |
Western Penna Hospital – Pittsburgh |
| Knabb Barrel Div. – Maple Glen |
Western Pennsylvania Hospital for Insane – Dixmont |
| Knabb Barrel Div. – Marcus Hook |
Western Pennsylvania Power Co. – Springdale |
| Knabb Barrel Div. Marcus Hook |
Western Railroad Co. |
| Knitting Factory – Dallas |
Western State Psychiatric Hospital – Pittsburgh |
| Knoblit – Richmond Street – Philadelphia |
Western State School Hospital Canonsburg |
| Knoll Products, Inc. Hanover Township |
Westfield River Paper Co. – Conschohocken |
| Knouse Corp. – Peach Bottom |
Westfield Tanning Co. |
| Knouse Corp. Peach Glen, Adams County |
Westgate Plaza – New Castle |
| Knouse Foods Cooperative, Inc. – Orrtanna |
Westin William Penn Hotel |
| Knox Glass Plant – Clarion |
Westinghouse – Pittsburgh |
| Kobuta Chemical Plant – Kobuta |
Westinghouse Air Brake Co. – Pittsburgh |
| Kolnile Brewing Co. – Philadelphia |
Westinghouse Bettis – Mifflin |
| Koopers-Petrolia Co. |
Westinghouse Cars & Co. – Philadelphia |
| Kopp Glass Swissvale |
Westinghouse Elec Corp. – Derby |
| Koppel Bridge – Koppel |
Westinghouse Electric & Manufacturing Co. – Essington |
| Koppel Plant – Beaver Falls |
Westinghouse Electric Airbrake – Greensburg |
| Koppel Steel Co. – Ambridge |
Westinghouse Electric Corp. – Elderton |
| Koppel Steel Co. Beaver Falls |
Westinghouse Electric Corp. A B Building – Turtle Creek |
| Koppers – Fairless Hills |
Westinghouse Electric Corp. Astronuclear Laboratory Large |
| Koppers Building Pittsburgh |
Westinghouse Electric Corp. Atomic Office Large |
| Koppers Chemical – Kobuta |
Westinghouse Electric Corp. Beaver |
| Koppers Chemical Co. Bridgeville |
Westinghouse Electric Corp. Bettis Atomic Power Lab Mifflin |
| Koppers Co, Inc. – Tar Products Div. – New Norristown |
Westinghouse Electric Corp. Bettis Atomic Power Lab Pittsburgh |
| Koppers Co. – Johnstown |
Westinghouse Electric Corp. Cheswick |
| Koppers Co. Air Reduction Johnstown |
Westinghouse Electric Corp. Derry |
| Koppers Co. Aliquippa |
Westinghouse Electric Corp. Keystone Power Station Elderton |
| Koppers Co. Bridgeville |
Westinghouse Electric Corp. Keystone Station – Shelocta |
| Koppers Co. Butler |
Westinghouse Electric Corp. Keystone Station Units #1 #2 Shelocta |
| Koppers Co. Chemical Division Edwin |
Westinghouse Electric Corp. Laboratory Pittsburgh |
| Koppers Co. Chemical Division Kobuta Beaver |
Westinghouse Electric Corp. Linhart Works Turtle Creek |
| Koppers Co. Chemicals Dyestuffs Div. Petrolia |
Westinghouse Electric Corp. Philadelphia Works Lester |
| Koppers Co. Emporium |
Westinghouse Electric Corp. Plant A B Building Wilmerding |
| Koppers Co. General Commodities Warehouse Pittsburgh |
Westinghouse Electric Corp. Plant Receiving Dept Pittsburgh |
| Koppers Co. Inc – Beaver |
Westinghouse Electric Corp. Plant Section Tl #12 Pittsburgh |
| Koppers Co. Inc. – Chemical Division – Edwin |
Westinghouse Electric Corp. South Philadelphia Plant Lester |
| Koppers Co. Inc. – Johnstown |
Westinghouse Electric Corp. Specialty Metals Plant Blairsville |
| Koppers Co. Inc. – Tar Products Division – Swedeland |
Westinghouse Electric Corp. Steam Division – Lexington |
| Koppers Co. Inc. Dylite Plant Kobuta |
Westinghouse Electric Corp. Trafford Works Bailey House Trafford |
| Koppers Co. Inc. Petolia Plant Petrolia |
Westinghouse Electric Manufacturing Co. Pittsburgh |
| Koppers Co. Josephtown |
Westinghouse Electric Plant Greensburg |
| Koppers Co. Kobuta Beaver |
Westinghouse Electric Plant Mark J. Q. Power Plant Pittsburgh |
| Koppers Co. McKees Rocks |
Westinghouse Electro Corp. Westinghouse Astronuclear Lab Large |
| Koppers Co. Monaca |
Westinghouse General Electric & Manufacturing Co. – Pittsburgh |
| Koppers Co. Monessen |
Westinghouse High Voltage Insulator Co. – Derry |
| Koppers Co. Monroeville |
Westinghouse Machine Co. – Pittsburgh |
| Koppers Co. Neville Island |
Westinghouse– Pittsburgh |
| Koppers Co. Oil City |
Westinghouse Plant |
| Koppers Co. Organic Materials Div. Oil City |
Westinghouse Plant – Pittsburgh |
| Koppers Co. Petrolia |
Westinghouse Research Facility – Churchill |
| Koppers Co. Philadelphia |
Westinghouse Reynolds Plant – Greenville |
| Koppers Co. Pittsburgh Co. Building 35 Bridgeville |
Westinghouse Ridge St Warehouse Sharon |
| Koppers Co. Plastics Division Kobuta |
Westinghouse Turbine Plant – Lester |
| Koppers Co. Plastics Division Monaca |
Westinghouse Turbine-Generator York Haven |
| Koppers Co. Tar Products Division New Norristown |
Westinghouse Turbines & Generators Shelocta |
| Koppers Co. Tar Products Division Oil City |
Westinghouse, Church, Kerr & Co. – Cocks Ferry |
| Koppers Co. Tar Products Division Swedeland |
Westmont High School – Johnstown |
| Koppers Co. Verona Research Center Verona |
Westmont Shopping Center – Johnstown |
| Koppers Fairless Hills |
Westmoreland Coal Co. – Irwin |
| Koppers Pittsburgh Co. – Bridgeville |
Westmoreland Coal Co. Rillton |
| Koppers Research Lab Monroeville |
Westmoreland Coal Co. Yukon |
| Koppers-Kobuta Koppers Chemical – Monaca |
Westmoreland County Courthouse – Greensburg |
| Korhumel Steel Aluminum Co. – New Castle |
Westmoreland County Home for The Destitute – Greensburg |
| Korvettes Shopping Center – Philadelphia |
Westmoreland County Prison – Greensburg |
| Kossman – Green Tree |
Westmoreland Home For the Destitute Greensburg |
| Kraft Foods – Fogelsville |
Westmoreland Mall – Greensburg |
| Kraft Foods Co. – Palmyra |
Westmoreland Manor – Greensburg |
| Kroger Store Butler |
Westmoreland Paper Co. Newton |
| Kutz Engineering Pittsburgh |
Westmoreland Railway Co. |
| Kutztown Foundry & Machine – Kutztown |
Westmoreland Water Co. – Derry |
| Kutztown Foundry Kutztown |
Weston Field – Scranton |
| Kutztown High School Kutztown |
Westside Osteopathic Hospital – York |
| L & L Heating & Equipment Philadelphia |
Westvaco – Williamsburg |
| L & L Manufacturing Co. – Upland |
Westvaco Corp. Tyrone |
| L & N Railroad – Conway |
Westvaco Pulp & Paper – Tyrone |
| L & R Construction – Philadelphia |
Westvaco Tyrone |
| L- Air Liquide Walnut Street Gate Johnstown |
Westvaco Williamsburg |
| L Sonneborn Sons Inc. – Daugherty Refinery Div. – Petrolia |
Wetterau – Belle Vernon |
| L Winteres – Philadelphia |
Weyerhaeuser Co. – Minquon |
| L. A. Riley & Co. – Ashland |
Weyerhaeuser Co. Ridgway |
| L. A. Riley & Co. Centralia |
Weyerhauser, Inc. – Ridgeway |
| L. A. Riley & Co. Philadelphia |
Weyeth Laboratories, Inc. – Malvern |
| L. C. Anderson & Sons – Huntingdon |
Weyeth Laboratories, Inc. Chester |
| L. G.& E. – Paddys Run Station |
Wh Cars & Co. – Philadelphia |
| L. Goldstein’s & Sons, Inc. – Philadelphia |
Wheatland Tube – Wheatland |
| L. H. Parke Co. – Philadelphia |
Wheelabrator Falls Morrisville |
| L. H. Prentice Co. – Pittsburgh |
Wheeling Pitt Steel – Monessen |
| L. J. Land, Inc. – Reading |
Wheeling- Pittsburg Steel Corp. Allenport |
| L. L. Heating Equipment Philadelphia |
Wheeling Pittsburgh Steel Co. – Monesson |
| L. L. Manufacturing Co. Upland |
Wheeling-Pittsburgh Steel Corp. Allenport |
| L. Laveson & Son – Philadelphia |
Wheeling-Pittsburgh Steel Corp. Pittsburgh |
| L. M. Bare Paper Co. – Roaring Springs |
Wheelwright & Mudge – York |
| L. N. Railroad Conway |
White Cross Store – Monroeville |
| L. O. Bouquin Co. Oil City |
White Haven Div. |
| L. Sonneborn Sons, Inc. Petrolia |
White Haven Sanitarium – White Haven |
| L. Winteres Philadelphia |
White Marsh Junction |
| La Belle Coal Washer – La Belle |
White Mountain Paper Co. – Portsmouth |
| La Belle Ironworks Allegheny |
White Pigment Corp. – Kimberton |
| La Belle Works Allegheny |
White Pigment Corp. King of Prussia |
| La Brum School – Philadelphia |
Whitehall Cement Co. Annville |
| La Brum School Red Lion Calero Roads Philadelphia |
Whitehall Cement Plant – Whitehall |
| Labor Products & Ice Co. – Brakenridge |
Whitehall Portland Cement Co. – Cementon |
| Labrobe Steel Co. – Latrobe |
WhiteHaven Sanatorium |
| Lackawanna & Western Railroad Co. |
Whitehaven Sanatorium White Haven |
| Lackawanna & Wyoming Valley Railway Co. – Scranton |
Whitemarsh Township – Montgomery County |
| Lackawanna Coal & Coke Co. – Vintondale |
Whitemarsh Township Incinerator Lafayette Hill |
| Lackawanna Coal & Coke Co. Wehrum |
Whiting Corp. – Erie |
| Lackawanna Iron & Coal Co. – Scranton |
Whitlock Auto – Bridgeville |
| Lackawanna Iron & Steel Co. – Donaghmore |
Whitman Chocolate – Philadelphia |
| Lackawanna Iron & Steel Co. Lebanon |
Whitmarsh Township Incinerator Lafayette |
| Lackawanna Iron & Steel Co. North Cornwall |
Whitmoyer Laboratories – Myerstown |
| Lackawanna Iron & Steel Co. Scranton |
Wickes Furniture – Coraopolis |
| Lackawanna Iron & Steel Co. Vintondale |
Wickes Furniture – Monroeville |
| Lackawanna Valley Electric Light & Power Co. – Carbondale |
Wicks Furniture – Robinson Township |
| Laco Applicators, Inc. – Warren State Boiler House – Warren |
Wicks Men Store – Beaver Falls |
| Laco McMullen Co. Erie |
Widener Building – Philadelphia |
| Laco-Mcmullen Co. Inc. – Erie |
Widener University – Chester |
| Ladbrookes – Moon Township |
Widgeon – Chester |
| Laddie Boy Div of N C C P Philadelphia |
Wiegner Smelting Co. – Philadelphia |
| Laddie Boy Dog Food Company – Philadelphia |
Wilbur Chocolate Co. – Philadelphia |
| Lafarge Construction Materials – Mifflin |
Wilcox Wilford Corp. – Royersford |
| Lafayette College – Easton |
Wilcox Wilford Corp. Spring City |
| Lafayette Hotel – Philadelphia |
Wildman & Schwartz – Norristown |
| L-Air Liquide – Walnut Street Gate – Johnstown |
Wildman Arms Apartments – Landsdowne |
| Lake Lynn Powerhouse – Lake Lynn |
Wildman Jacquard Co. – Norristown |
| Lakeland Hospital – Lakeland |
Wilkes Barre Anthracite Coal Co. – Wilkes Barre |
| Lakens Iron & Steel Co. Coatesville |
Wilkes Barre Co. – Wilkes Barre |
| Lancaster Closure Plant – Lancaster |
Wilkes Barre College – Wilkes Barre |
| Lancaster Cork Works – Lancaster |
Wilkes Barre Electric Light Co. – Wilkes Barre |
| Lancaster County Railway & Light Co. – Lancaster |
Wilkes Barre Gas & Electric Co. – Wilkes Barre |
| Lancaster Floor Plant – Lancaster |
Wilkes Barre Lace Manufacturing – Wilkes Barre |
| Lancaster Floor Plant Building #500 Lancaster |
Wilkes Barre Power Plant Wilkes Barre |
| Lancaster Floor Plant Building 44 Lancaster |
Wilkes Barre Railway Co. – Wilkes Barre |
| Lancaster Malleable Casting Co. – Lancaster |
Wilkes Barre Steam Heat Co. – Wilkes Barre |
| Lancaster Malleable Castings Co. – Lancaster |
Wilkes Barre Steam Heat Co. Wilkes Barre |
| Lancaster Post Office Lancaster |
Wilkes College – Kingston |
| Lancaster U. S Post Office Lancaster |
Wilkesbarre Railway Co. Wilkes Barre |
| Lancaster Water Works – Lancaster |
Wilkinsburg & Eat Pittsburgh Railroad – Pittsburgh |
| Lance Colliery #11 Plymouth Junction |
Wilkinsburg & Pittsburg Railroad – Pittsburgh |
| Land Title & Trust Co. – Philadelphia |
Wilkinsburg Electric Co. – Wilkinsburg |
| Land Title Building |
Wilkinsburg High School – Wilkinsburg |
| Land Title Building Philadelphia |
Wilkinson & Pittsburgh Street Railway Co. – Rankin |
| Landis Machine Co. – Waynesboro |
Wilkinson & Pittsburgh Street Railway Co. Pittsburgh |
| Landis Tool Co. – Waynesboro |
Willamette Industries Johnsonburg |
| Lane Service Co. – Freeport |
William A Mc Dowell Jr. Co. Philadelphia |
| Lanehart Co. – Greencastle |
William A Shoemaker School – Mackungie |
| Lankenau Hospital – Nurses School – Wyndmoor |
William Armstrong & Sons – Connellsville |
| Lankenau Hospital Philadelphia |
William Cramp & Sons – Philadelphia |
| Lansdale Tube – Lansdale |
William Cramp & Sons, Ship Engine Building Co. Philadelphia |
| Lansdowne Steel & Iron Co. Morton |
William F. Forepaugh Jr. & Brothers Philadelphia |
| Lansdowne Towers, Inc. Alden |
William Galloway – Philadelphia |
| Large Distilling Co. – Wilson |
William H. Grundy & Co. – Bristol |
| Larson Builders – Allison Park |
William H. Ottemiller Co. York |
| Larson Supply Reading |
William H. Taylor & Co. – Allentown |
| Lasko Metal Products, Inc. Westchester |
William J. Cramp Elementary School Philadelphia |
| Latrobe Area Hospital – Latrobe |
William J. Mimm Lancaster Floor Plant – Lancaster |
| Latrobe Area Hospital – Latrobe |
William Krause & Sons Cement Co. – Martins Creek |
| Latrobe Brewing Co. Latrobe |
William L. Sayre Junior High School – Philadelphia |
| Latrobe Construction – Latrobe |
William Leard Co. – New Brighton |
| Latrobe Die Casting – Latrobe |
William Mann Co. – Philadelphia |
| Latrobe Electric Steel Co. – Latrobe |
William Miller & Sons Co. – Pittsburgh |
| Latrobe Foundry & Machine Latrobe |
William Penn Colliery – Shenandoah |
| Latrobe Froge & Spring, Inc. – Latrobe |
William Penn High School – Philadelphia |
| Latrobe High School – Latrobe |
William Penn Hotel – Pittsburgh |
| Latrobe Hospital – Latrobe |
William Penn P. O. Montgomery County |
| Latrobe Steel Works Latrobe |
William Penn P.O. – Lafayette |
| Latrobe Universal Latrobe |
William Steele Sons Co. – Philadelphia |
| Latrobe Water Authority – Latrobe |
William Weightman, Bingham House Philadelphia |
| Latrobe Works – Latrobe |
William Wharton Jr. Co. – Easton |
| Laurel Crest Manor – Ebensburg |
William Whitaker & Sons – Philadelphia |
| Laurel Intermediate School – New Castle |
Williamette Industries – Johnsonburg |
| Laurel Run Coal Co. – Miners Mills |
Williamsburg Generating Station Williamsburg |
| Laurel Runcoal Co. – Wilkes Barre |
Williamsgrove Clay Products Bigler |
| Laureldale Plant – Laureldale |
Williamson Brothers Co. – Philadelphia |
| Laureldale Plant |
Williamson Trade School – Media |
| Laurelton State Village |
Williamsport Area High School – Williamsport |
| Lava Crucible Refractories |
Williamsport Free School of Mechanical Trades – Media |
| Lava Crucilbe Refractories – Zeleinople |
Williamsport Powerhouse – Wiliamsport |
| Lavino Furnace Co. – Lebanon |
Williamsport Technical Institute – Wiliamsport |
| Lavino Shipping Co. – Philadelphia |
Williard Inc. King of Prussia |
| Lawrence Cement Co. of Pennsylvania Northampton |
Williard Ince – Kimberton |
| Lawrence Cement Co. Siegfried |
Willow Grove Air Station – Willow Grove |
| Lawrence Junction |
Willow Grove Naval Base – Willow Grove |
| Lawrence Village Plaza – New Castle |
Willow Grove Navan Air Station & Joint Reserve Base – Horsham |
| Lawton Lease |
Willow Grove Railway Co. |
| Leader Publishing – Pittsburgh |
Willow Street Steam Plant Philadelphia |
| Leader Publishing Co. – Pittsburgh |
Willow Street Vo- Tech Building 1Willow Street |
| League Island Philadelphia |
Willowbrook #3 – Plymouth Meeting |
| Leamington School – Pittsburgh |
Willson Products Division Reading |
| Leamy Home Mount Airy – Philadelphia |
Wilmington Electric Railway Co. |
| Lebanon Blast Furnace Co. – Lebanon |
Wilmington Refinery Marcus Hook |
| Lebanon City County Building – Lebanon |
Wilputte Coke Oven – Philadelphia |
| Lebanon Concentrator Plant – Lebanon |
Wilson & Co. – Sunbury |
| Lebanon Elementary School – Lebanon |
Wilson & Co. Inc – Philadelphia |
| Lebanon Furnace Co. Lebanon |
Wilson Fitzgibbons Oil Co. – Bradford |
| Lebanon Plumbing Supply Co. Lebanon |
Wilson H. Grown, Inc. – Germantown |
| Lebanon Shops – MT. Lebanon |
Wilson Martin Co. Inc. Wilson Martin Div. Philadelphia |
| Lebanon Steam Co. – Lebanon |
Wilson Safety Products – Reading |
| Lebanon Valley College – Annville |
Wilson School District – Sinking Springs |
| Lebanon Valley College Vickroy Hall Girls Dorm Annville |
Wilson Senior High School – Sinking Springs |
| Lebanon Valley Ironworks Lebanon |
Wilson Snyder Building Pittsburgh |
| Lebanon Valley Street Railway Co. – Lebanon |
Wilson-Snyder Centrifugal Pump Co. – Pittsburgh |
| Lebanon, Wernersville State Hospital – Wernersville |
Windber Electric Co. – Wison |
| Lectromelt – Pittsburgh |
Windber Elementary School – Washington |
| Ledwig Huntel Co. Sharon Hill |
Windber Elementary School – Windber |
| Lee Hospital – Johnstown |
Windber Heating Co. – Windber |
| Lee Rubber & Tire Co. – Connellsville |
Windber Housing Project – Windber |
| Lee Rubber Co. Tire Co. Conshohocken |
Windover Junior High School – Greensburg |
| Leechburg Steel Co. – Leechburg |
Winter Brewery – Pittsburgh |
| Leechburg Steel Co. Leechburg |
Wire Mill – Johnstown |
| Leechburg Supply Co. – Leechburg |
Wireless Services – Allison Park |
| Leeds & Northrop Co. |
Wirtz A H Inc. – Chester |
| Leeds & Northrup – Philadelphia |
Wise – Kingston |
| Leeds Northrop North Wales |
Wise Delicatessen Co. – Berwick |
| Leetsdale High School – Leetsdale |
Wise Foods, Inc. – Berwick |
| Leetsdale Industrial Park – Leetsdale |
Wise Potato Chip Co. – Burwick |
| Leetsdale Shipyard Ambridge |
Wishart Theater – Philadelphia |
| Lehigh & Wilkes Barre Coal Co. – Ashley |
Wishart Theatre – Philadelphia |
| Lehigh & Wilkes Barre Coal Co. Colliery #4 Audenried |
WItChemical Co. Activated Carbon Division Petrolia |
| Lehigh & Wilkes Barre Coal Co. Empire Colliery #4 Ashley |
WItChemical Co. Bradford |
| Lehigh & Wilkes Barre Coal Co. Hollenback Colliery #2 Wilkes Barre |
WItChemical Co. Karn City |
| Lehigh & Wilkes Barre Coal Co. Notingham Colliery |
WItChemical Co. Petrolia |
| Lehigh & Wilkes Barre Coal Co. Philadelphia |
Witco Chemical Corp. – Bradford |
| Lehigh & Wilkes Barre Coal Co. Plymouth |
WItco. Chemical Sonneborn Division Petrolia |
| Lehigh & Wilkes Barre Coal Co. Stanton Colliery #4 Ashley |
WItco. Corp. Petrolia |
| Lehigh & Wilkes Barre Coal Co. Sugar Notch Colliery #9 Sugar Notch |
Witmarsh Township Incinerator – Lafayette |
| Lehigh & Wilkes Barre Coal Co. Wanamie Colliery #3 Wanamie |
Wm Cramp & Sons Ship & Engine Building. Co. – Philadelphia |
| Lehigh Car Wheel & Axle Co. – Catasauqua |
Wm F Forepaugh Jr & Bro. – Philadelphia |
| Lehigh Coal & Co. – Hauto |
Wm L. Sayre Jr High School – Philadelphia |
| Lehigh Coal & Co. Nesquehoning |
Wm Penn Hotel – Pittsburgh |
| Lehigh Coal & Co. Tamaqua |
Wm Steele Sons Co. – Philadelphia |
| Lehigh Coal & Navagation Co. Hauto |
Wm Weightman – Philadelphia |
| Lehigh Coal & Navagation Co. Lansford |
Wm Whitaker 7 Sons – Philadelphia |
| Lehigh Coal & Navagation Co. Nesquehoning |
WM. A McDowell Jr. Co. Philadelphia |
| Lehigh Coal & Navagation Co. Philadelphia |
Wm. Cramp & Sons – Philadelphia |
| Lehigh Coal & Navigation Co. Wilkes Barre |
Wm. H. Taylor & Co. – Allentown |
| Lehigh Coke Co. – S. Bethlehem |
Wm. Miller & Sons Co. – Pittsburgh |
| Lehigh Colliery – Tamaqua |
Wm. Penn High School – Philadelphia |
| Lehigh County Court House – Allentown |
Wm. Weightman – Philadelphia |
| Lehigh County Home Wescosville |
Wm. Whitaker & Sons. – Philadelphia |
| Lehigh Design Co. – Dravosburg |
Wmca Radio Station – Chambersburg |
| Lehigh Division Bethlehem Plant Bethlehem |
Wmmann Co. – Philadelphia |
| Lehigh Dye Finishing Co. Allentown |
Wolf Building Co. – Philadelphia |
| Lehigh Engineering – Bethlehem |
Wolfs Head Oil Refining Co. Inc. Reno |
| Lehigh Engineering Co. – Plant – Hanover |
Wolstons Woods N Yd Barge Ldg Line Philadelphia |
| Lehigh Engineering Co. Dunmore |
Wolverine Empire Refinishing Co. Reno |
| Lehigh Foundry Easton |
Womens Christian Association – Philadelphia |
| Lehigh Industrial Power Co. – Hauto |
Womens Medical College – Philadelphia |
| Lehigh Industrial Power Co. Stauto |
Women’s Medical College Hospital – Philadelphia |
| Lehigh Manufacturing Co. – Philadelphia |
Wood John Co. Conshohocken |
| Lehigh Material Co. – Philadelphia |
Wood Mrs Josephine Green Conshohocken |
| Lehigh Navigation Electric Co. – Hanto |
Wood, Alan, Steel Co. Conshohocken |
| Lehigh Parkway School – Allentown |
Woodbourne Apartment Association – Levittown |
| Lehigh Pipe Shop – Bethlehem |
Woodings Robert T Inc. Pittsburgh |
| Lehigh Pipe Shop Bethlehem |
Woodings Verona Steel Works – Verona |
| Lehigh Portland Cement Allentown |
Woodings Verona Tool Machine – Verona |
| Lehigh Portland Cement Co. Allentown |
Woodland Fire Brick Co. – Woodland |
| Lehigh Portland Cement Co. Bath |
Woodward Inc. Mars |
| Lehigh Portland Cement Co. Copley |
Woolworth Building – Lancaster |
| Lehigh Portland Cement Co. Fogelsville |
Woolworth -Tyrone |
| Lehigh Portland Cement Co. New Castle |
Works #1 Creighton |
| Lehigh Portland Cement Co. Ormrod |
Worth Brothers Co. – Coatesville |
| Lehigh Portland Cement Co. Paynes Station |
Worthington Mushroom Mine, Worthington |
| Lehigh Portland Cement Co. Sandts Eddy |
WR Grace Wayne Interim Storage Site ssaic County |
| Lehigh Portland Fogelsville Plant Fogelsville |
Wright Brothers & Co. – Philadelphia |
| Lehigh Silk Dyeing Co. Weidmann |
Wright Elementary School – Altoona |
| Lehigh University – Bethlehem |
Wright Nissan – Wexford |
| Lehigh Valley Coal Co. Centralia |
Wright- Patterson Airforce Base |
| Lehigh Valley Coal Co. Exeter Colliery Pittston |
Wright School – Altoona |
| Lehigh Valley Coal Co. Hazleton |
Wrightstown Elementary School – Bucks County |
| Lehigh Valley Coal Co. Jeansville, Hazelton |
WV Pulp Paper Co. Tyrone |
| Lehigh Valley Coal Co. Mt Carmel |
Wyckoff Steel – Ambridge |
| Lehigh Valley Coal Co. Orwigsburg |
Wycoff Steel Ambridge |
| Lehigh Valley Coal Co. Park Place |
Wyeth Laboratories Inc. Chester |
| Lehigh Valley Coal Co. Philadelphia |
Wyeth Laboratories Inc. Malvern |
| Lehigh Valley Coal Co. Pittston Junction |
Wyeth Laboratories Inc. Paoli |
| Lehigh Valley Coal Co. Pittston |
Wyeth Laboratories Inc. Philadelphia |
| Lehigh Valley Coal Co. Wilkes Barre |
Wyeth Labs – Philadelphia |
| Lehigh Valley Coal Co. Wyoming |
Wyeth Labs Chester |
| Lehigh Valley Cooperative Farmers – Allentown |
Wyeth Labs Malvern |
| Lehigh Valley Dairy – Allentown |
Wyeth Labs Philadelphia |
| Lehigh Valley Plant Hauto Steam Electric Station Hauto |
Wykoff Steel – Oakmont |
| Lehigh Valley R. R.- Pringle Street Siding – Kingston |
Wyman Pump – Ridc Park Aspinwall |
| Lehigh Valley Railroad – Coxton |
Wyoming Ave & G St. – Philadelphia |
| Lehigh Valley Railroad Co. – Bethlehem |
Wyoming County School – Wyoming |
| Lehigh Valley Supply Allentown |
Wyoming Engineering Co. – Wilkes Barre |
| Lehigh Valley Traction Co. – Allentown |
Wyoming Seminary – Kingston |
| Lehigh Valley Transit Co. – Allentown |
Wyoming Valley Electric Light, Heat & Power Co. – Wilkes Barre |
| Lehigh Water Co. – Easton |
Wyoming Valley Railway Co. |
| Lehigh Wilkes Barr Coal Co. – Philadelphia |
Y & O Coal – Allison Mine – Allison |
| Lehighs Northamptom Gas Electric Co. – Catasauqua |
Y- Auditorium, State Correctional Institution Waymart |
| Lehighton Electric Light, Heat & Power Co. – Lehighton |
Yarn Plant – Beech Creek |
| Lehighton Post Office – Lehighton |
Y-Auditorium State Correctional Institution |
| Lehighton U. S Post Office – Lehighton |
Yellow Cab Co. Philadelphia |
| Leicester Continental Mills Co. – Germantown |
Yerks & Plumb – Frankford |
| Leidy School – Philadelphia |
Yewdall & Jones Brothers – Philadelphia |
| Leisenring & Co. – Duncott |
YMCA – Lansdale |
| Leisenring & Co. Minersville |
YMCA – Philadelphia |
| Leith Mines – Leith |
YMCA Auditorium – Ridgway |
| Leith Mines Leith Station |
YMCA Auditorium, State Correctional Institution Waymart |
| Lem Construction – Eighty-Four |
YMCA Building Greensburg |
| Lemington Nursing Home Liberty |
YMCA Building Lancaster |
| Lempiner Roofing & Siding Lebanon |
YMCA Building Lancaster |
| Lenape Elementary School – Ford City |
YMCA Building Lansdale |
| Lenape Forge, Inc. – Chester |
YMCA Building New Castle |
| Lenhardt Hall, MIllersville University Millersville |
YMCA Building Philadelphia |
| Leninger Knitting Mills – Mohnton |
YMCA Building Pottstown |
| Leninger Knitting Mills Mohnton |
YMCA Building Sewickley |
| Lenox Crystal – Mt. Pleasant |
Yobe Electric, Inc. Pittsburgh |
| Lentz & Co. Park Place |
Yoder Industries – York |
| Lentz Lilly & Co. – Park Place |
York City Steam Plant – York |
| Leonard Brothers – Scranton |
York Corp. – York |
| Leopold Vilsack – Pittsburgh |
York Corrugating Co. – York |
| Lester Industrial Building Lester |
York County Courthouse – York |
| Lester Industrial Park – Lester |
York Haven Paper Co. York Haven |
| Leston Co. – Philadelphia |
York Haven Power Station – York Haven |
| Letort Elementary School – Millersburg |
York Hospital – York |
| Letterkenny Depot – Letterkenny |
York International Corp. – York |
| Letterkenny Ordnance Depot- Field Service Acct – Chambersburg |
York Junior College Library York |
| Letterkenny Ordnance Depot- Field Service Acct – Letterkenny |
York Manufacturing Co. – York |
| Level Green School Level Green |
York Shipley Inc – York |
| Levinson Steel – McKees Rocks |
York Water Co. – York |
| Lewis Block – Pittsburgh |
Yorkhaven Paper Co. – York Haven |
| Lewis Elkin Elementary – Philadelphia |
Yorktown Theatre – Ogonty |
| Lewis Foundry & Mach Co. – Pittsburgh |
Yorktowne Hotel – York |
| Lewis Foundry & Machine Co. – Groveton |
Young Door Co. – Sunbury |
| Lewis Foundry & Machine Co. – Pittsburgh |
Young Everett Kinzers |
| Lewis S. Cox & Co. – Philadelphia |
Young Mens Christian Association. – Philadelphia |
| Lewistown & Reedsville Electric Railway Co. – Lewistown |
Youngstown Sheet & Tube Co. – McKees Rocks |
| Lewistown Hospital – Lewistown |
Youngstown Sheet & Tube Co. Coraopolis |
| Lewistown Smelting Refining Co. Lewistown |
Youngstown Sheet & Tube Co. McKees Rocks |
| Lexington Mead Corp. – Pittsburgh |
Z & L Lumber Co. – Burgettstown |
| Liberty Bell Racetrack – Philadelphia |
Z & L Lumber Co. – Sharpsburg |
| Liberty High School |
Z & L Lumber Co. Mercer |
| Liberty Home Dressed Meat Co. – Pittsburgh |
Zabel Bros. Co. Inc. Philadelphia |
| Liberty Manufacturing Co. – Pittsburgh |
Zack Industries – Reading |
| Liberty Market – Pittsburgh |
Zausner Foods Corp. – New Holland |
| Liberty Market Co. – Pittsburgh |
Zedmark, Inc. Valencia |
| Liberty Powder Co. – Mt. Braddock |
Zelienople Disposal – Zelienople |
| Liberty School – Pittsburgh |
Zemperemmi – Clairton |
| Library – Castle Shannon |
Zenith Corp. – Lansdale |
| Lickdale Iron Co. – Lickdale |
Zenith Manufacturing Plant – North Wales |
| Liggett & Myers Tobacco Co. – Philadelphia |
Zimmerli Gym Lock Haven University – Lock Haven |
| Liggett Spring & Axle Co. – Monongahela |
Zinc Corp. horsehead Industries – Freedom |
| Light Plant Farmington |
Zinc Smelting Division – Monaca |
| Ligonier Elementary- Jr. High School – Ligonier |
Zinman Furs – Philadelphia |
| Lilly Washington School – Lilly |
Zion Industries – Bradford |
| Limbach Co. – Pittsburgh |
Zion Lutheran Church Penbrook |
| Limbach S Pgh Waterhouse Co. – Elrama |
Zippo Lighter – Bradford |
| Limerick Generating Station Pottstown |
Zonolite Co. New Castle |
| Limerick Nuclear Power Plant – Limerick |
Zug & Co. Limited – Pittsburgh |
| Limerick Station – Philadelphia Electric – Pottstown |
Zug Iron & Steel Co. – Pittsburgh |
| Limestone Mine – Bradys Bend |
Zurn Industries, Inc. – Erie City Ironworks |
