Oregon - Constructed - 1900–1909
| Adams, Charles F., House |
| Ainsworth, Maud and Belle, House |
| Albers Brothers Milling Company |
| Annand-Loomis House |
| Anthony-Buckley House |
| Arlington Club |
| Arminius Hotel |
| Astoria City Hall |
| Balch Hotel |
| Baldwin, Thomas M., House |
| Barker, S. B., Building |
| Bramhall, Jennie, House |
| Brown, Charles and Martha, House |
| Doernbecher, Frank Silas, House |
| First Presbyterian Church of Roseburg |
| Flavel, Captain George Conrad, House |
| Goodwillie-Allen House |
| Green Lantern Saloon |
| Henry, C. K., Building |
| Jefferson Substation |
| Kohlhagen Building |
| Kuehle, Henry, Investment Property |
| Laurelhurst Historic District |
| Laurelhurst Park |
| Lostine Pharmacy |
| Menefee, L. B., House |
| Munsell, William O., House |
| New Imperial Hotel |
| Nicolai-Cake-Olson House |
| Old First National Bank of Prineville, and Foster and Hyde Store |
| Page and Son Apartments |
| Pallay Building |
| Patton Home |
| Pilot Butte Canal: Downtown Redmond Segment Historic District |
| Quackenbush Hardware Store |
| Reed-Wells House |
| Rutherford House |
| Seelig-Byler House |
| Shogren, Fred A., May, and Ann, House |
| Sholes, Albert S., House |
| Shorey, Charles, House |
| Smith, Alfred H. and Mary E., House |
| Southern Pacific Passenger Depot |
| Spencer, Arthur Champlin, and Margaret Fenton Spencer House |
| Tarpley, Louis and Bessie, House |
| Wallowa County Courthouse |
| Warren, Frank M., House |
| Washington High School |
| Waucoma Hotel |
| Wells Fargo Building |
| Wheeldon Apartment Building |
| Yale Union Laundry Building |
Data from United States Park Service and Wikidata
