| Idaho Falls L.D.S. Hospital | Idaho Falls | ID |
| Idaho Mining | Mountain Home | ID |
| Idaho Nuclear | Scoville | ID |
| Idaho Pacific | Ririe | ID |
| Idaho Portland Cement | Inkom | ID |
| Idaho State Capitol | Boise | ID |
| Inel | Idaho Falls | ID |
| Intermountain Gas | Boise | ID |
| Jaype Stud Mill & Plywood Plant | Jaype | ID |
| John F. Cooney | Boise | ID |
| J.R. Simplot | Pocatello | ID |
| J.R. Simplot | Conda | ID |
| J.R. Simplot | Caldwell | ID |
| J.R. Simplot Acid Plant | Pocatello | ID |
| Kerr McGee Oil Industries | Soda Springs | ID |
| Kraft Food | Pocatello | ID |
| Lamb Weston | American Falls | ID |
| Laminated Wood Products | Blackfoot | ID |
| Latter Day Saints Hospital | Idaho Falls | ID |
| LDS Hospital | Idaho Falls | ID |
| Lewiston Grade School | Lewiston | ID |
| Lewiston Industrial Supply | Lewiston | ID |
| Louisiana Pacific | Sandpoint | ID |
| McAlister Equipment Leasing | Burley | ID |
| McFarland Pole | Sandpoint | ID |
| Milner Irrigation District | Milner | ID |
| M. Morrin & Son | Rupert | ID |
| Monsanto | Soda Springs | ID |
| Morrison Knudsen | Arco | ID |
| Morrison Knudsen | Boise | ID |
| Mountain Home Air Force Base | Mountain Home | ID |
| National Reactor Testing Station | Scoville | ID |
| New Hotel | Shoshone | ID |
| Northern Idaho & Montana Power | Sandpoint | ID |
| Northwest Roads | Pocatello | ID |
| Nrf | Idaho Falls | ID |
| NRTS | Scoville | ID |
| Oregon Short Line Railroad | Pocatello | ID |
| Oregon Short Line Railroad | Glenns Ferry | ID |
| Oregon Short Line Railroad | Montpelier | ID |
| Otato | Burley | ID |
| Pack River Lumber | Dover | ID |
| Paul Hardeman | Arco | ID |
| Paul's Plumbing & Heating | Pocatello | ID |
| Payette High School | Payette | ID |
| Phillips Petroleum | Scoville | ID |
| Plateau Supply | Idaho Falls | ID |
| Pocatello Chemical | Pocatello | ID |
| Pocatello U.S. Naval Ordnance Plant | Pocatello | ID |
| Potlatch | Potlatch | ID |
