| 6th Street Powerhouse – Cedar Rapids |
J. W. Davis Co. – Bettendorf |
| A T & T Co – Boone |
Jacob E. Decker & Sons – Mason City |
| A. G. Processing, Incorporated – Eagle Grove |
Jaeger Manufacturing Co. – Des Moines |
| A. M. Bennett Co. – Sioux City |
Jas. Stewart & Co. – Ottumwa |
| A. P. Green Refractories Co. – Des Moines |
Jefferson Electric Co. – Jefferson |
| A. Y. McDonald Building – Sioux City |
Jeld Wen Incorporated – Dubuque |
| A. Y. McDonald Manufacturing Co. – Dubuque |
Jennie Edmundson Hospital – Council Bluffs |
| A. Y. McDonald Manufacturing Co. – Waterloo |
John Deere – Dubuque |
| AASE Haugen Homes |
John Deere Co. – Des Moines |
| AC & S Inc – Ketchikan |
John Deere Des Moines – Ankeny |
| AC & S Inc – Ketchikan |
John Deere Dubuque Tractor – Dubuque |
| Ag Processing Incorporated |
John Deere Power Plant – Dubuque |
| Ag Processing, Inc. – Sergeant Bluff |
John Deere Powerhouse – Waterloo |
| Alaska Insulation – Fort Greeley |
John Deere Tractor – Waterloo |
| Alaska Juneau Gold Mining Co. – Juneau |
John Deere Tractor Plant – Waterloo |
| Alaska Lumber & Pulp Co. – Sitka |
John Deere Works – Ankeny |
| Alaska Pipeline Service Co. – Valdez |
John Morrell & Co. – Ottumwa |
| Alcoa – Bettendorf |
John Neff Cedar Falls Paper Co. – Cedar Falls |
| Alcoa – Reynolds Metals – Davenport |
John Neff Cedar Falls Paper Comp. |
| Alcoa Co. – Davenport |
Johns Manville Plant – Wilton |
| Alcoa Plant – Riverdale |
Johns-Manville Plant |
| Allerton Gas Co. – Centerville |
Johnson Gas Appliance Co. – Cedar Rapids |
| Alliant Energy Corp. – Palo |
Johnson Machine Works, Inc. – Chariton |
| Alliant Power Co. – Dubuque |
Johnson School – Davenport |
| Alliant Power Stack – Lansing |
Alliant Power Stack – Lansing |
| Allied Chemical – Dubuque |
Jones As Terminal Sts – Dubuque |
| Allied Construction Service – Bettendorf |
JP Austin Associated Inc. – Davenport |
| Allied Mills, Incorporated – Mason City |
Jualin Mines Co. – Berners Bay |
| Aluminum Corp. Of America – Riverdale |
Jualin Mines Co. – Juneau |
| Amana Refrigeration – Amana |
Kahl Building – Davenport |
| American Cereal Co. – Cedar Rapids |
Kalo Brick & Tile Co. – Kalo |
| American Crystal Sugar Co. – Mason City |
Keokuk Railway & Power Co. – Keokuk |
| American Herbicide Plant – Dubuque |
Ketchikan Pulp & Paper Corp – Ketchikan |
| American Republic Inc Co Bldg – Des Moines |
Ketchikan Pulp Mill – Ketchikan |
| American Wire Cloth Manufacturing Co. – Clinton |
Ketchikan Spruce Mills – Ketchikan |
| Ames Municipal Electric System – Ames |
Kings Concrete Co. – Cedar Rapids |
| Ames Municipal Utilities – Ames |
Kiowa Corp. – Marshalltown |
| Ames Powerhouse – Ames |
Ames Powerhouse – Ames |
| Ames-Farmer Canning Co. – Ames |
Kohrs Cold Storage Co. – Davenport |
| Anamosa Elementary School – Anamosa |
Kohrs Packing Co. – Davenport |
| Animal Diseases Laboratory – Ames |
Kramer Produce – Mason City |
| Annis Supply Co. – Waterloo |
Kromer Produce Co. – Waterloo |
| Apco Oil Corp. – Fort Dodge |
L & L Insulation Co. – Des Moines |
| L & L Insulation Co. – Des Moines |
L. C. Harberger – Keokuk |
| Arco Chemical Co. – Prudhoe Bay |
L. H. Kurtz Co. – Des Moines |
| Armour & Co. – Mason City |
Ladd Air Force Base |
| Armour & Co. – Sioux City |
Lake Shore Tire & Rubber Co. – Des Moines |
| Armour Dial, Inc. – Fort Dodge |
Land O Lakes Cooperative – Sheldon |
| Armstrong Contracting & Supply Corp. – Harlan |
Lang’s Dairy Equipment |
| Armstrong High School – Rockwell |
Lansing Power Plant – Interstate Power Co. |
| Armstrong Rubber Manufacturing Co. – Des Moines |
Lansing Power Station Lansing |
| Arnold Electric Power Station Co. – Oelwein |
Lattiner P M Manufacturing Co. Cedar Rapids |
| Art Brown Motors – Davenport |
Le Claire Manufacturing Co. – Le Claire |
| Art Gallery & Museum – Davenport |
Lehigh Portland Cement Co. – Mason City |
| Atchinson, Topeka & Santa Fe Railway Co. – Fort Dodge |
Lehy Bridge & Tile – Fort Dodge |
| Atlantic Municipal Utilities – Atlantic |
Lemars Water & Light Co. – Lemars |
| Aurora Energy |
Leopold Desk Co. – Burlington |
| AY McDonald Manufacturing Co. – Dubuque |
Lincoln Sales & Service, Inc. |
| B. C. Bunn – Municipal Light Plant – Forest City |
Linde Air Products Co. – Davenport |
| B. C. Bunn – Municipal Power Plant – Hartley |
Link Belt Co. Cedar Rapids |
| Ballsford Station – Des Moines |
Linwood Stone Products Co. – Linwood |
| Barnes Electric Light & Power Co. – Maquoketa |
Lippert Bros. – Marshalltown |
| Beaver Channel Station Unit 2 – Clinton |
Locher Co. – Kenai |
| Beck & Wagner – Danville |
Longview Fibre Co. – Cedar Rapids |
| Belle Plaine – Waste Water Treatment Plant – Belle Plaine |
Louisa Des Moines Drainage District – Oakville |
| Bennett High School – Bennett |
Louisa Powerhouse – Muscatine |
| Berkley & Co. |
Lsu Electrical Power Plant – Ottumwa |
| Bernice Lake Powerhouse – Nikiski |
Lutheran Hospital – Des Moines |
| Berwanger Boiler – Dubuque |
M. L. Kapp Station – Clinton |
| Bestwall Gypsum Co. – Fort Dodge |
M. l. Kapp Station, 2001 Beaver Channel Pkwy Clinton |
| Bettendorf Community School – Bettendorf |
M. W. Kellogg Co. – Fort Dodge |
| Bettendorf High School – Bettendorf |
M.l. Kapp Generating Station Clinton |
| Bettendorf Powerhouse |
Machine Products Co. – Corydon |
| Big Sioux Station Sioux City |
Maizwood Products Co. – Dubuque |
| Bixby, W.H. Inc. – Davenport |
Mallow Construction Co. – Clear |
| Blackhawk Foundry – Davenport |
Maquoketa Light & Power Co. – Maquoketa |
| Board Of Control of State Institutions – Des Moines |
Marietta Cement Midwest Division – Linwood |
| Board Of Education – Clinton |
Marquart Concrete Block Co. – Waterloo |
| Boone Power Station Boone |
Marquette Cement Manufacturing Co. – Des Moines |
| Borden Chemical Division of Borden, Inc. – Waterloo |
Marshall Canning Co. – Hampton |
| Brammer Manufacturing – Davenport |
Marshall Sugar Refining Co. – Marshalltown |
| Brice Gas & Electric Co. – Mason City |
Marshall Swift & Co. – Mason City |
| Bridgestone Firestone – Des Moines |
Marshalltown Powerhouse – Marshalltown |
| British Petroleum, Flow Station – Prudhoe Bay |
Marshalltown Trowel Co. – Marshalltown |
| Brittain & Co. – Marshalltown |
Martin Marietta Cement Co. – Davenport |
| Brown Lumber Co. – Raymond |
Mason City Brick & Tile – Mason City |
| Brown Paper Co. – Fort Dodge |
Mason City Clear Lake Railway Co. – Emery |
| Brunswick-Balke-Collender Co. – Dubuque |
Mason County Powerhouse |
| Builders Materials Inc. Cedar Rapids |
Mason County Powerhouse |
| Bureau Of Indian Affairs – Sitka |
Matthews Machine Shop |
| Burlington Generating Station Burlington |
Maytag – Des Moines |
| Burlington Generation Station – Burlington |
Maytag Mfg Co – Newton |
| Burlington High School – Burlington |
Maytag Plant #2 – Newton |
| Burlington Northern Railroad – Burlington |
Mc Donald Manufacturing Co A Y – Dubuque |
| Burlington Northern Santa Fe Railroad – Clinton |
Mc Guiness C H & Co. – Des Moines |
| Burlington Ordnance Works – Burlington |
Mccarthy Improvement – Davenport |
| Burlington Power Plant – Burlington |
Mcfarland Clinic – Ames |
| Burpee Seed Co. – Clinton |
Mcguiness C H & Co. – Davenport |
| C D & Q, Inc. |
Mckinley School – Davenport |
| C. Ewert Plumbing & Heating |
Mealey Goss Dexter |
| C. F. Braun & Co. – Fort Dodge |
Mechanical Department – Mason City |
| C. Gilbert – Des Moines |
Medical Research Hospital – Iowa City |
| C. H. McGuiness Co. – Des Moines |
Meeks Brothers – Bonaparte |
| California Chemical Co. – Fort Dodge |
Mental Health Institute |
| Campbell Chain Co. – Burlington |
Merchants National Bank – Cedar Rapids |
| Can-Tex Industries – Ottumwa |
Merchants National Bank |
| Capital City Boiler |
Mercy Hospital – Davenport |
| Caradco Corp. – Dubuque |
Meredith Printing, Inc. – Des Moines |
| Cargill Co. – Washington |
Meredith Publishing Plant – Des Moines |
| Cargill Grain Cedar Rapids |
Mid-American Energy Co. |
| Cargill Inc. Cedar Rapids |
Midland Industries Inc. – Cedar Rapids |
| Cargill Soybean Plant – Des Moines |
Midland Packing Co. – Sioux City |
| Cargill, Inc. Cedar Rapids |
Midwest Carbide Corp. – Keokuk |
| Cargill, Incorporated – Eddyville |
Midwest Janitorial Services |
| Cargill-Eddyville Corn Milling |
Midwest Power |
| Carnation Co. |
Midwestern Pipe Contractors – Belle Vue |
| Carnation Co. – Waverly |
Milton Kapp Generating Station Unit 2 Clinton |
| Carr, Adams & Collier Co. – Dubuque |
Mississippi River Power Co. – Keokuk |
| Carrol Rendering – Carroll |
Missouri River Plant – Sioux City |
| Caterpillar Tractor Co. – Davenport |
Monray Windows |
| Caterpillar Tractor Co. – Mount Joy |
Monsanto – Davenport |
| Cedar Falls Municipal Utilities – Streeter Plant – Cedar Falls |
Monsanto Chemical Plant – Muscatine |
| Cedar Falls Paper Manufacturing Co. – Cedar Falls |
MS. Clark Foods |
| Cedar Falls Powerhouse – Cedar Falls |
Municipal Electric Utilities |
| Cedar Falls Utilities – Cedar Falls |
Municipal Electric Utility – Power Plant #2 – Ames |
| Cedar Falls Utilities Streeter Generating Station Cedar Falls |
Municipal Light & Power Co. – Cedar Falls |
| Cedar Rapids & Iowa City Railway & Light Co. – Cedar Rapids |
Municipal Light & Water Plant – Atlantic |
| Cedar Rapids Electric Light & Power Co. – Cedar Rapids |
Municipal Light Power Plant – Coggon |
| Cedar Rapids Galvanizing – Cedar Rapids |
Municipal Power Plant – Atlantic |
| Cedar Rapids Meats – Cedar Rapids |
Municipal Utilities System |
| Cedar Rapids Nuclear Powerhouse – Cedar Rapids |
Murray Iron Works – Burlington |
| Cedar Valley Railway Construction Co. – Waterloo |
Muscatine Generating Station Muscatine |
| Celotex Corp. – Fort Dodge |
Muscatine Generating Station Unit 9 Muscatine |
| Centerville Light & Traction Co. – Centerville |
Muscatine Lighting Co. – Muscatine |
| Central Asbestos & Supply – Des Moines |
Muscatine Municipal Electric Plant – Muscatine |
| Central Catholic High School – Dubuque |
Muscatine Power & Light – Muscatine |
| Central Heating Plant – Valdez |
Muscatine Power & Water – Muscatine |
| Central Rubber & Supply Co. – Oakdale |
Mystic Milling Co. – Sioux City |
| Central Service Co. – Des Moines |
Nanabijou, Inc. |
| Central Steel Tube Co. – Clinton |
National By Products Inc. – Clinton |
| Centralized Load Dispatching Headquarters Cedar Rapids |
National Carbon Co. – Red Oak |
| Cepex Midwest Plant – Fort Dodge |
National Gypsum – Fort Dodge |
| Certainteed Products Corp. – Fort Dodge |
National Starch Co. – Des Moines |
| Chamberlain Manufacturing Co. – Waterloo |
National Travelers Life Insurance Building – Des Moines |
| Champion International – Clinton |
Natural Gas Pipeline Co. of America – Emerson |
| Champion Paper Mill |
Natural Gas Pipeline Co. of America Station 107 Emerson |
| Chappell Clinic |
Natural Gas Pipeline Co. of America Station 108 Truro |
| Chemical Plant – Clinton |
Natural Gas Pipeline Co. of America Station 109 Harper |
| Chemplex Construction Co. – Clinton |
Neal Station, North 1151 260th St. Sioux City |
| Chemplex Plant – Clinton |
New Cooperative, Inc. |
| Cherokee State Hospital – Cherokee |
New High School – Maquoketa |
| Chevron Chemical Co. – Fort Dodge |
Newton & Northwestern Railroad – Fraser |
| Chevron Chemical Co. – Fort Madison |
Ng Manufacturing Plant – Fort Dodge |
| Chevron Oil Co. – Fort Dodge |
Nichols Wire & Aluminum Co. – Davenport |
| Chicago & Northwestern Railroad – Clinton |
Nome Mining Co. – Nome |
| Chicago Great Western Railway – Oelwein |
Norby Distributing |
| Chicago NW Railroad |
Nordyke & Marmon Co. – Indianapolis |
| Chicago Rock Island & Pacific Railway Co. – Manly |
North American Manufacturing Co. |
| Chicago, Burlington & Quincy Railroad – Ottumwa |
North American Manufacturing Co. – Sioux City |
| City Ice Co. – Des Moines |
Northern Consolidated Hangar – Bethel |
| City Light Plant – Indianola |
Northern Indiana Gas & Electric – Sioux City |
| City Of Atlantic – Electric Generating Station – Atlantic |
Northern Natural Gas – Ventura |
| City Of Fairbanks Power Plant |
Northern Natural Gas Co. – Mason City |
| City Plumbing Supply – Des Moines |
Northern Petro Chemical – Joliet |
| Clarinda State Hospital – Clarinda |
Northern Sugar Corp. – Mason City |
| Climax Molybdenum Co. – Fort Dodge |
Northwest Bell Telephone Building – Davenport |
| Clinton Corn Plant – Clinton |
Northwest Light & Power Co. – Skagway |
| Clinton Corn Processing Co. – Clinton |
Northwest Plumbing |
| Clinton Corn Syrup Refining Co. – Clinton |
Northwestern Bell – Des Moines |
| Clinton Engines Corp. – Maquoketa |
Northwestern Bell Telephone Co. – Des Moines |
| Clinton General Hospital – Clinton |
Northwestern Construction Co. – Boone |
| Clinton Industries, Inc. – Clinton |
Northwestern Construction Comp. |
| Clinton Products Co. – Clinton |
Northwestern States Portland Cement – Mason City |
| Clinton Steam Laundry Co. – Clinton |
Northwestern States Portland Cement Co. – Mason City |
| Clinton Sugar Refining Co. – Clinton |
Northwoods Living, Inc. |
| Cole Rendering Co. – Waterloo |
O’Mac Co. Woolco Store |
| College Station |
Oakdale Hospital – Oakdale |
| Collier Carbon & Chemical Co. – Kenai |
Oakes Thomas Co. – Clinton |
| Collins Radio Computer Data Building Cedar Rapids |
Oakley Ray – Waterloo |
| Commonwealth Edison Co. – Grundy Center |
Oil Chemical Atomic |
| Consolidated Packaging Corp. – Fort Dodge |
Oliver Corp. – Charles City |
| Consolidated Packing – Burlington |
Oliver Farm Equipment Co. – Charles City |
| Construction Products CPI |
O’Mac Co. Woolco Store – Cedar Falls |
| Consumers Coop – Chemical Plant – Fort Dodge |
Omaha Standard – Council Bluffs |
| Consumers Cooperative Assoc. – Fort Dodge |
Original Enderes Co. – Guttenburg |
| Co-Op Chemical – Fort Dodge |
Ortho Chemical |
| Co-Op Chemical Plant – Fort Dodge |
Oscar Mayer & Co. – Davenport |
| Cooper Manufacturing Co. – Marshalltown |
Oscar Meyer Foods Co. – Davenport |
| Corn Belt Packing Co. – Dubuque |
Oscar Meyer Manufacturing Plant – Davenport |
| Corn Belt Power Cooperative – Steam Plant – Humboldt |
Oskaloosa Traction & Light Co. – Oskaloosa |
| Corn Belt Power Cooperative Generating Station Spencer |
Osmundson Manufacturing Co. – Perry |
| Corn Starch & Syrup – Cedar Rapids |
Osmundson Manufacturing Comp. |
| Corn Starch Syrup Cedar Rapids |
Ottumwa Box Car Loader Co. – Ottumwa |
| Corn Sweeteners Inc. Cedar Rapids |
Ottumwa Brick & Tile Co. – Ottumwa |
| Council Bluffs Power Plant – Council Bluffs |
Ottumwa Electric & Steam Co. – Ottumwa |
| Council Bluffs Powerhouse |
Ottumwa Electric Railway – Ottumwa |
| Council Bluffs, Unit 3 – Des Moines |
Ottumwa Generating Station Ottumwa |
| Covenant Medical Center – Waterloo |
Ottumwa Railway & Light Co. – Ottumwa |
| Craemer Produce Co. – Waterloo |
Ottumwa Traction & Light Co. – Ottumwa |
| Crandic Railroad Warehouse – Iowa City |
P. M. Lattner Manufacturing Co. – Cedar Rapids |
| Crandic Railroad Warehouse. – Iowa City |
Packaging Corp. Of America – Tama |
| Crandon Paper Mills, Inc. – Fort Dodge |
Patrick Hardware – Apelle |
| Crystal Heating & Plumbing |
Paul Hoshek – Burlington |
| Cudahy Packing Co. – Sioux City |
Paul J Krez Co. – Mason City |
| Curtis Brothers & Co. – Clinton |
Paxton & Vierling Steel – Carter Lake |
| Dadco Corp. – Davenport |
Pella Municipal Power Plant |
| Dale Dithmart Constructor |
Pella Utility House – Pella |
| Darling International – Sioux City |
Penich Ford Limited Cedar Rapids |
| Davenport Bank Building – Davenport |
Penick & Ford, Ltd. – Cedar Rapids |
| Davenport Central High School – Davenport |
Penn Dixie Cement Corp. – Des Moines |
| Davenport Community School – Davenport |
Penn Dixie Cement Plant – Des Moines |
| Davenport Gas & Electric Co. – Davenport |
Peoples Gas & Electric Co. – Burlington |
| Davenport Glucose Manufacturing Co. – Davenport |
Peoples Gas & Electric Co. – Mason City |
| Davenport Iowa Wastewater Treatment Plant – Davenport |
Peoples Light Co. – Davenport |
| Davenport Machine Foundry Co. Cedar Rapids |
Perry Packing Co. |
| Davenport Water Co. – Davenport |
Peter Pan Bakers Inc. – Cedar Rapids |
| Davenport West High School – Davenport |
Petro Star Co. – Valdez |
| Davenport Works. – Riverdale |
Phillips Chemical – Fort Dodge |
| Deere & Co. – Waterloo |
Phillips Petroleum Co. – Kenai |
| Denison Hotel – Denison |
Pierson Plumbing & Heating |
| Department Of Me – Ames |
Pirelli Armstrong Tire Corp. – Des Moines |
| Des Moines Brewing Co. – Des Moines |
Pitts Des Moines Steel Co. – Des Moines |
| Des Moines City Railway Co. – Des Moines |
Pittsburg-Des Moines Steel |
| Des Moines City Railway Co. – Des Moines |
Plumb Supply Co. – Mason City |
| Des Moines Edison Light Co. – Des Moines |
Plumbers Supply Co. – Iowa City |
| Des Moines Electric Co. – Des Moines |
Port Dodge |
| Des Moines Power Station Des Moines |
Port Neal Generating Station – Sergeant Bluff |
| Des Moines Power Station, #2 – Des Moines |
Port Neal Power Plant – Sioux City |
| Dewey Port Tl Cem – Linwood |
Port Neal Station Unit #2 Salix |
| Dewey Portland Cement Co. – Davenport |
Potlatch Corp. – Lewiston |
| Dial Corp. – Fort Dodge |
Power Plant (S) – Spencer |
| Donohoo Steel Treating Co. – Bettendorf |
Power Service Corp. – Spencer |
| Dorman Field House – Fayette |
Power Service Corp. City of Spencer |
| Douglas Co. – Cedar Rapids |
Power Station #2 Des Moines |
| Downing Box Co. – Cedar Rapids |
Powerhouse – Dubuque |
| Dr. Salsbury’S Laboratory – Charles City |
Prairie Creek Powerhouse – Cedar Rapids |
| Drake University, Ingham Hall Of Science – Des Moines |
Prairie Pipe Line Co. – Fort Dodge |
| Dryden Rubber Co. |
Proctor & Gamble Chemical Plant – Iowa City |
| Dryden-Sheller Globe – Keokuk |
Putnam Asbestos Co. – Cedar Rapids |
| Duane Arnold Alliant Energy |
Putnam Building – Davenport |
| Duane Arnold Alliant Energy |
Quad-City Boiler |
| Duane Arnold Nuclear Powerhouse – Cedar Rapids |
Quaker Oats Co. Cedar Rapids |
| Dubuque Steam Supply Co. – Dubuque |
Quinn Wire & Iron Co. – Boone |
| Dubuque Stone Products – Dubuque |
R W Rice – Sioux City |
| Dupont Chemical Plant |
R. M. Daly & Co. – Des Moines |
| Dupont Plant – Clinton |
R.R. Donnelly & Sons Co. – Des Moines |
| E.I. Du Pont De Nemours & Co. – Clinton |
Ragan Co. |
| E.I. Du Pont De Nemours & Co., Chemical – Fort Dodge |
Ralston Purina Co. – Iowa Falls |
| Eagle Grove Community Schools – Eagle Grove |
Rath Packing Co. – Waterloo |
| Eagle Iron Works – Des Moines |
Red Jacket Manufacturing Co. – Davenport |
| Earl F. Wisdom Generating Station Spencer |
Red Oak Water Works – Red Oak |
| Eastern Iowa Light& Power Co. – Montpelier |
Redfield Brick & Tile – Redfield |
| Eaton Corp. – Shenandoah |
Register & Tribune Building – Des Moines |
| Economy Roofing & Insulation Co. – Davenport |
Reynolds Metals – Davenport |
| Eddyville Powerhouse |
Riverside Generating Plant – Bettendorf |
| Edison Electric Light Co. – Des Moines |
Riverside Power Plant |
| Eielson Air Force Base |
Riverside Power Station – Iowana |
| Electric Powerhouse – Lansing |
Riverside Powerhouse – Bentondorf |
| Electronic Engineering Co. |
Riverside Station – Bettendorf |
| Elementary School Building – Mount Pleasant |
Roach & Musser Co. – Muscatine |
| Fairbanks Exploration Co. |
Roberts & Oake, Inc. – Marshalltown |
| Fairbanks Municipal Power |
Rock Island Transit |
| Fairbanks Public Utilities |
Rockford Brick & Tile Co. – Rockford |
| Fairfield Aluminum Casting Co. – Fairfield |
Rockwell Collins – Cedar Rapids |
| Fairmont Cemetery – Davenport |
Rockwell Std Corp. – Fairfield |
| Fairmont Creamery Co. – Sioux City |
Roosevelt High School Addition – Des Moines |
| Fairmont Foods – Sioux City |
Roth Packing Co. – Glenwood |
| Falls City Creamery Co. – Falls City |
Rubber Industries, Division of Dryden Rubber Co. – Keokuk |
| Farley & Loetscher Manufacturing Co. – Dubuque |
Ruth Packing Co. – Columbus Junction |
| Farm Bureau – Des Moines |
S W Manufacturing Co. – Bettendorf |
| Farmers Elevator Insurance Co. – Des Moines |
Sage Facilities |
| Farmers Elevator Insurance Co. |
Salsburys Laboratory – Charles City |
| Finley Hospital – Dubuque |
Salvation Army – Davenport |
| Firestone Tire & Rubber Co. – Des Moines |
Schick General Hospital – Clinton |
| Firestone Tire & Rubber Plant – Des Moines |
Sea Land – Fairbanks Alaska |
| First Federal Savings & Loan Building – Davenport |
Sears Manufacturing |
| First Federal Savings & Loan Building |
Sears, Roebuck & Co. – Waterloo |
| First Mississippi Corp. |
Sergeant Bluff |
| First Mississippi Plant |
Seward Marine Industrial Center – Seward |
| First National Bank Building – Davenport |
Seward Ship’s Drydock – Seward |
| Fisher Artificial Ice & Cold Storage Co. – Dubuque |
Shaeffer W A Pen Co. – Fort Dodge |
| Fisher Controls Co. – Marshalltown |
Shearer Contractors – Little Sioux |
| Fisher Governor Co. – Marshalltown |
Sheldon Dehydrating Co. – Sheldon |
| Fluor Corp. Ltd – Clinton |
Shell Oil – On Shore Facility – Kenai |
| Fort Dodge Division – Fort Dodge |
Shell Oil – Platform A – Kenai |
| Fort Madison |
Sheller Manufacturing Co. – Keokuk |
| Fort Wainwright – Manholes |
Shriver Van Horn Co. – Jefferson |
| Frank Foundries Corp. – Davenport |
Siems Drake Puget Sound – Kodiak |
| Frank L. Smart Junior High School – Davenport |
Silas Mason Co – Burlington |
| Frank Zobac Construction – Cedar Rapids |
Silas Mason Co. – Iowa Ordinance Plant – Burlington |
| Franklin County General Hospital – Hampton |
Sinclair Chemical |
| French Hecht, Inc. – Davenport |
Sinclair Petrochemicals I – Fort Dodge |
| Ft. Dodge Gas & Electric Co. – Fort Dodge |
Sinclair Refining – Des Moines |
| Ft. Dodge Light & Power Co. – Fort Dodge |
Sinclair Refining Co. – Dubuque |
| Ft. Dodge, Des Moines & Southern Railroad Co. – Fraser |
Sioux City Brick & Tile Co. – Sioux City |
| Ft. Madison Chair Co. – Fort Dodge |
Sioux City Coal & Gas – Sioux City |
| Ft. Neil Army Base – Sioux City |
Sioux City Engine Works – Sioux City |
| Fust Herman H & Co. – Des Moines |
Sioux City Gas & Electric Co. – Sioux City |
| Galena Radar Base – Galena |
Sioux City Oatmeal Co. – Sioux City |
| Galesburg Sr. High School – Davenport |
Sioux City Service Co. – Sioux City |
| Gas Pipe Line Co. Of America – Harper |
Sioux City Traction Co. – Sioux City |
| Gate City Steel – Davenport |
Sister of Humility – Ottumwa |
| General Mills – Belmond |
Sisters of St. Francis – Dubuque |
| General Mills, Incorporated – Keokuk |
Sisters of St. Francis Of Dubuque |
| General Services Administration – Animal Disease Lab – Ames |
Sisters Of St. Francis Xavier Hospital – Dubuque |
| Generating Station Cedar Rapids |
Sivyer Steel Casting Co. – Bettendorf |
| George Neal Power Station – Unit #1 – Sioux City |
Smart Junior High School – Davenport |
| George Neal Station North Sergeant Bluff |
Smith Plumbing & Heating |
| George Neal Station North Unit 1 Sergeant Bluff |
South Coast Corp. Raceland – Raceland |
| George Neal Station South Salix |
Southerland Station – Marshalltown |
| Georgia Pacific Corp. – Fort Dodge |
Southwest Federated – Creston |
| Gibson Homans Co. – Des Moines |
Sowest Federated Power – Crandic |
| Glenwood State Hospital School – Glenwood |
Spencer Veneer Products |
| Glick Supply Co. – Marshalltown |
Square D Co. Cedar Rapids |
| Globe Machine & Supply Co. – Cedar Rapids |
St. Ambrose College – Davenport |
| Globe Machinery & Supply Co. – Des Moines |
St. Francis Hospital – Waterloo |
| Glucose Sugar Refining Co. – Davenport |
St. Luke’s Methodist Hospital – Cedar Rapids |
| Golden Valley Electric Power Plant |
Standard Oil Co. Of Indiana – Council Bluffs |
| Goodyear Tire & Rubber – Des Moines |
Star Galvanizing Co. – Cedar Rapids |
| Governor Road Plant |
State Colony For Epileptics – Woodward |
| Governor Road Plant – Marshalltown |
State Of Iowa Capital Commission – Des Moines |
| Grain Processing Corp. – Muscatine |
State Sanitarium – Oakdale |
| Grain Processing Plant – Muscatine |
Stockyards Service & Supply Co. – Sioux City |
| Grandview Baptist Church – Davenport |
Storm Lake High School – Des Moines |
| Grandwood School – Bettendorf |
Storm Lake High School |
| Grant School – Davenport |
Storm Lake Power Plant |
| Great Western Cereal Co. – Fort Dodge |
Streeter Plant |
| Green Valley Chemical Co. – Crandic |
Strosnider Concrete, Inc. |
| Griffin Pipe |
Sudlow Jr. High School – Davenport |
| Grundy Center |
Sutherland Station Unit 3 Marshalltown |
| Hansen Brothers – Des Moines |
Swift & Co. – Clinton |
| Hawkeye Chemical Co – Clinton |
Swift & Co. Soybean Mill – Des Moines |
| Hawkeye Chemical Co. – Clinton |
Swift Co. – Marshalltown |
| Hawkeye Chemical Plant – Clinton |
Swift Edible Oil Co. – Des Moines |
| Hawkeye Laundry Co. – Boone |
Swift Independent Packing – Des Moines |
| Hawkeye Laundry Co. |
Swift Meat Packing Co. – Sioux City |
| Hawkeye Steel Products – Waterloo |
Systems IA. Ammo Plant |
| Hawkeye Tire & Rubber Co. – Des Moines |
T. M. Sinclair & Co. Cedar Rapids |
| Healy River Coal Corp – Suntrana |
Tailor & Co. Inc. – Settendorf |
| Helix Associates Inc. |
Taylor Insulation Co. – Cedar Rapids |
| Hennesy Brothers Co. – Montrose |
Taylor School – Davenport |
| Herman Fust Co. – Des Moines |
Temp Associates-Marshalltown, Inc. |
| Highland Potato Chip Co. |
Terra Chemical Corp. – Sergeant Bluff |
| Highway Surfacing Corp. – Adair |
Terra Chemical International |
| Hills-Mccanna – Crandic |
Tesoro Alaska Co. – Kenai |
| Hinde & Dauch Paper Co. – Fort Dodge |
Thermolyne Corp. – Dubuque |
| Home Doctors Cancer Centers Clinical Trials Blog |
Thomas Construction |
| Home Federal Savings & Loan Association – Des Moines |
Thompson Electric Co. |
| Home Power Co. – Skagway |
Tipton Power Plant |
| Hooker Chemical Corp. – Buffalo |
Tire Stud, Division of Studebaker – Jefferson |
| Hooker Chemical Corp. – Phosphorus Division – Davenport |
Titan Tire Corp. – Des Moines |
| Hoovers Hatchery |
Titan Wheel International – Des Moines |
| Hope Brick Works – Hope |
Topin Packing Co. – Fort Dodge |
| Hormel Foods Corp. |
Town Of New London – New London |
| Hormel Plant – Algona |
Trimark Physicians Group, Inc. |
| Hubinger Co. – Keokuk |
Tschantz Brothers Carpenters |
| Huiskamp Brothers Co. – Keokuk |
Tyson Foods, Inc. |
| Humboldt Iowa Powerhouse – Humboldt |
Tyson Foods, Inc. – Perry |
| Huttig Manufacturing Co. – Muscatine |
U. S. Air Force, Eielson Afb |
| HyCross Hatchery |
U. S. Air Force, Ladd Afb |
| Hydro-Tile |
U. S. Army Ordination Plant – Fort Dodge |
| Hygrade Food Products Corp. – Storm Lake |
U. S. Gypsum Co. – Sperry |
| I.E.S. – Cedar Rapids |
U. S. I. – Clinton |
| Ideal Plumbing & Heating Co. |
U. S. Naval Air Base – Kodiak |
| Ies Utilities – Burlington |
U. S. Naval Reserve Aviation Base – Ottumwa |
| Ies Utilities, Incorporated – Marshalltown |
U. S. Smelting & Refining & Mining Co. |
| Inc. Town Of Sibley – Sibley |
Union Carbide – Kenai |
| Institute For Feeble Minded Children – Glenwood |
Union Carbide & Carbon Corp. – Davenport |
| International Distilling Co. – Des Moines |
Union Collier – Kenai |
| International Milling Co. – Sioux City |
Union Electric Co. – Dubuque |
| International Minerals & Chemical Corp. – Mason City |
Union Oil Co. – Mono Pod – Kenai |
| Interstate Pipe & Supply Co. – Dubuque |
Union Pacific Railroad – Clinton |
| Interstate Pipe & Supply Co. |
Union Pacific Railroad Co. – Council Bluffs |
| Interstate Power & Light Co. – Burlington |
Union Stock Yard Co. – Sioux City |
| Interstate Power & Light Power Plant |
United Light & Power |
| Interstate Power Co. – Dubuque |
United Light & Power – Missouri Valley |
| Interstate Power Plant – Clinton |
United Light & Railway Co. – Iowa City |
| Iowa & Illinois Railway Co. – Clinton |
United Light & Railways Co. – Davenport |
| Iowa Air National Guard – Base Operations Office – Des Moines |
United States Army Corps of Engineers – Valdez |
| Iowa Asbestos Co. – Des Moines |
United States Gypsum Co. – Fort Dodge |
| Iowa Beef Processors, Inc. Headquarters |
United States Naval Air Base – Sitka |
| Iowa Canning Co. – La Porte City |
United States Naval Air Facilities – Adak |
| Iowa Co Port Neal Gen Station |
United States Submarine Base – Kodiak |
| Iowa Electric Co. – Muscatine |
University Avenue Supply – Des Moines |
| Iowa Electric Light & Pow Cedar Rapids |
University of Iowa – Iowa City |
| Iowa Electric Light & Power Cedar Rapids |
University of Iowa – Steam Tunnels |
| Iowa Electric Light & Power Co. Cedar Rapids |
University of Iowa Steam Tunnels – Iowa City |
| Iowa Electric Light & Power Co. Hotline Generating Station |
University of Iowa, Various Buildings – Iowa City |
| Iowa Electric Light & Power Co. Iowa Falls Station |
University of Northern Iowa Powerhouse – Cedar Falls |
| Iowa Farming Tool Co. Fort Dodge |
University of Northern Iowa, Various Buildings – Cedar Falls |
| Iowa Farming Tool Co. Fort Dodge |
University Power Plant – Iowa City |
| Iowa Interstate Railroad |
Unocal Chemicals Division – Kenai |
| Iowa Light & Power |
USI Chemical Co. |
| Iowa Malleable Iron Co. Fairfield |
Utilities Power & Light Co. – Oelwein |
| Iowa Manufacturing Co. Cedar Rapids |
Van Camp Packing Co. – Perry |
| Iowa Manufacturing Co. Cedar Rapids |
Van Camp Packing Comp. |
| Iowa Mutual Insurance – Dewitt |
Veterans Administration Hospital – Des Moines |
| Iowa Northwestern Railroad |
Veterans’ Administration Hospital – Iowa City |
| Iowa Ordnance Plant – Burlington |
Vinton Municipal Utility – Vinton |
| Iowa Packing Co. – Des Moines |
Virginia Carolina Chemical Co – Dubuque |
| Iowa Portland Cement Co. – Des Moines |
Visking Corp. – Terre Haute |
| Iowa Power & Light Co. Crandic |
Vylactos Laboratories – Des Moines |
| Iowa Power Light Co. Power Station Council Bluffs |
W. A. Klinger Co., Inc. – Lehigh |
| Iowa Power Plant – Des Moines |
W. A. Sheaffer Pen Co. – Fort Dodge |
| Iowa Power Plant – Waterloo |
W. D. Deckert Co. – Dubuque |
| Iowa Public Service Co. George Neal Station South Unit 2 Salix |
W. J. Co. Warehouse – Sioux City |
| Iowa Public Service Co. Maynard Station – Waterloo |
Wabash Power |
| Iowa Public Service Co. Sioux City |
Waldinger Corp. – Des Moines |
| Iowa Public Service Co. Waterloo Station – Waterloo |
War Department. Cold Weather Exp Air Base |
| Iowa Public Service Gas & Electric Co. – Sioux City |
Washington Junior High School – Dubuque |
| Iowa River Light & Power Co. – Eldora |
Wastewater Treatment Plant |
| Iowa Sheet Metal Construction – Des Moines |
Water Street Station Sioux City |
| Iowa Soldiers Home – Marshalltown |
Waterloo & Cedar Rapids Transit Co. – Waterloo |
| Iowa Southern Burlington Generating Station Burlington |
Waterloo Cedar Falls Northern Railway Co. – Waterloo |
| Iowa Southern Power Station |
Waterloo Gas & Electric Co. – Waterloo |
| Iowa Southern Power Station – Burlington |
Wayne Manufacturing Co. – Cedar Rapids |
| Iowa Southern Utilities Co. – Centerville |
Weber Potato Chip Co. |
| Iowa Southern Utilities Co. Burlington Station – Kemper |
Weidenhaf Corp. – Algona |
| Iowa Southern Utilities Comp. |
Weldon’s Construction |
| Iowa Southern Utility Powerhouse – Eddyville |
West Des Moines Community School District |
| Iowa State Board of Education – Des Moines |
West Des Moines High School – Des Moines |
| Iowa State Capitol – Des Moines |
West Waterloo High School – Waterloo |
| Iowa State University – Ames |
Westdale Mall Cedar Rapids |
| Iowa State University, Various Buildings – Ames |
Westmar College – Lemars |
| Iowa Steel & Iron Works – Cedar Rapids |
Whirlpool Co. – Evansville |
| Iowa Veterans Home – Marshalltown |
Whitehead Machinery Co. – Davenport |
| Iowa, Illinois Gas & Electric Co. – Muscatine |
Wiese Corp |
| Iowa-Illinois Gas & Electric Co. – Bettendorf |
Wigdahl Brothers Hardware – Emmetsburg |
| Iowa-Illinois Gas & Electric Co. – Davenport |
Williams Alaska Petroleum – North Pole |
| Iowa-Illinois Gas & Electric Co. – Fort Dodge |
Wilson & Co., Inc. – Cedar Rapids |
| Iowa-illinois Gas Electric Co. Riverside Station Bettendorf |
Wilson Meat Packing – Cedar Rapids |
| Iron Public Service |
Wilson Packing – Cherokee |
| Iron Public Service – Port Neal Station – Unit #2 – Salix |
Wilsons Foods – Cedar Rapids |
| Irwin Chemical Co. – Des Moines |
Winger Co. – Newton |
| J & R Furniture & Carpet |
Wolf Creek Generating Station |
| J. A. Neymeyer Co. – Waterloo |
Woodland Coal Co. – Woodland |
| J. C. Hubinger Brothers Co. – Keokuk |
Woodward State Hospital & School – Woodward |
| J. Deere Tractor – Dubuque |
Woolco Store |
| J. F. Pritchard & Co. – Crandic |
Xavier Hospital – Dubuque |
| J. H. Hertsche – Hamburg |
YMCA – Cedar Rapids |
| J. I. Case Plant – Bettendorf |
Yonker Building – Des Moines |
| J. Morrell & Co. – Ottumwa |
Yukon Gold Co. – Iditarod |
