| Harbor Plywood | Aberdeen | WA |
| Harborview Hospital | Seattle | WA |
| Harrison Memorial Hospital | Bremerton | WA |
| Harvey Aluminum | Klickitat | WA |
| Heidelberg Brewing | Tacoma | WA |
| Henry Foss High School | Tacoma | WA |
| Henry Foss Tug | Seattle | WA |
| Henshaw, Bulkley & Company | Seattle | WA |
| Hi Duty Alloys | Seattle | WA |
| Hilltop Fire Station | Alderwood Manor | WA |
| Holmes Dining Hall | Ellensburg | WA |
| Holy Family Hospital | Spokane | WA |
| Honeydew Elementary Shcool | Renton | WA |
| Hooker Chemical | Tacoma | WA |
| Hooker Chemical | Seattle | WA |
| Hoquiam High School | Hoquiam | WA |
| Hoquiam Plywood | Hoquiam | WA |
| H S W Bellefield #2 | Bellevue | WA |
| Hydraulic Supply Manufacturing | Seattle | WA |
| IBM | Tacoma | WA |
| ICOA | Velox | WA |
| Ideal Cement | Seattle | WA |
| Independent Food Processors | Sunnyside | WA |
| Independent Insulating | Tacoma | WA |
| Indian Hospital | Tacoma | WA |
| Industrial Park | Velox | WA |
| Inland Empire Paper | Spokane | WA |
| Inland Empire Paper | Millwood | WA |
| Insulation | Seattle | WA |
| Insulation | Spokane | WA |
| Intaleo Aluminum | Ferndale | WA |
| International Crossarms | Bellingham | WA |
| International Paper | Yacolt | WA |
| Jackson Hall Medical Center | Tacoma | WA |
| James Monroe Junior High School | Seattle | WA |
| James River | Camas | WA |
| James Smyth Plumbing | Spokane | WA |
| Jas Smyth Plumbing & Heating | Spokane | WA |
| J.A. Veness Lumber | Winlock | WA |
| JCPenney | Bremerton | WA |
| Jefferson Golf Club | Seattle | WA |
| Jensen Air Freight | Seattle | WA |
| J.F Duthie | Seattle | WA |
| John F Shea | Seattle | WA |
| John I Haas | Yakima | WA |
| John Muir Elementary School | Seattle | WA |
| Johnny Ray Boiler | Vancouver | WA |
| Jones Block | Tacoma | WA |
| J.R. Harvey | Vancouver | WA |
| JT McIntire Mint Farm | Sunnyside | WA |
