Oregon - Area of significance: Commerce
| Dorchester House |
| Dosch, Henry E., House |
| Downing Building |
| Drain, Charles D., Jr., House |
| Drake Park Neighborhood Historic District |
| Duckwall, John C., House |
| East Portland Grand Avenue Historic District |
| Eddings-Provost House |
| Empire Block |
| Enders Building |
| Enterprise Mercantile and Milling Company Building |
| Ermatinger, Francis, House |
| Eugene Blair Boulevard Historic Commercial Area |
| Eugene Hotel |
| Faber, Edward Charles, House |
| Failing Office Building |
| Fairmount Hotel |
| Farra, Dr. George R., House |
| Farrar Building |
| First Bank of Joseph |
| First National Bank of Hood River |
| First National Bank, Vaupel Store and Oregon Hotel Buildings |
| Flavel, Capt. George, House and Carriage House |
| Fluhrer Bakery Building |
| Foley Building |
| Forest Grove Downtown Historic District |
| Fort Astoria |
| Francis, Clarence E., House |
| French, Edward, House |
| Frenchglen Hotel |
| Gabriel-Filer House |
| Gilbert, Andrew T., House |
| Gilliam and Bisbee Building |
| Gill, J. K., Building |
| Golden West Hotel |
| Goodwillie-Allen House |
| Grand Central Public Market |
| Grand Stable Building and Adjacent Commercial Building |
| Grants Pass G Street Historic District |
| Green Lantern Saloon |
| Hafer, Edgar F., House |
| Hamley and Company Leather Goods Store |
| Hanscom Hall |
| Harlow Block |
| Harlow, Fred, House |
| Harris Building |
| Hayse Blacksmith Shop |
| Heilbronner Block |
| Hendricks Building (K.O.T.M.) |
| Henry, C. K., Building |
| Heppner Hotel |
| Heryford, William P., House |
| Hexter, Levi, House |
| Hibbert, William, House |
| Hillcrest Orchard Historic District |
| Hobson-Gehlen General Merchandise Store |
| Hole House |
| Holmes, Harry and Eleanor, House |
| Honeyman Hardware Company Building |
| Honeyman, John S., House |
| Hotel Alder |
| Hotel Alma |
| Hotel Josephine Annex |
| Hotel North Bend |
| Hotel Western |
| Hot Lake Resort |
| Howell-Kohlhagen House |
| Hub Department Store Building |
| Hudelson, A.B. and Son, Building |
| Hudson's Bay Company Granary and Clerk's House Site |
| HUME, MARY D. |
| Imperial Hotel |
| Independence Historic District |
| Independence National Bank |
| IOOF Building |
| IOOF-Paris Fair Building |
| ISABELLA Shipwreck Site and Remains |
| Italian Gardeners and Ranchers Association Market Building |
| Jacksonville Historic District |
| J.C. Penney Building |
| Jensen Investment Company Building |
| J. K. Gill Company Building |
| Johnson, Charles E., Building |
| Jones Cash Store |
| Julian Hotel |
| Kam Wah Chung Company Building |
| Kenton Commercial Historic District |
| Kershaw, Dr. Andrew, House |
| King's Hill Historic District |
| Kline, Lewis G., House |
| Knight, William, House |
| Kohlhagen Building |
| Koontz, James H. and Cynthia, House |
| Koontz, J.H., Building |
| Kress Building |
| Kyle, William, and Sons, Building |
| Ladd Carriage House |
| Ladd's Addition Historic District |
| LaDow Block |
| La Grande Commercial Historic District |
Data from United States Park Service and Wikidata
