Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series007 - Spokane, Portland, and Seattle Railway
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3001 - Bridges
- 28 more...
- ItemWWASPSL3-014 - Spokane, Portland, and Seattle (SP&S) Vancouver Bridge at North Portland, Oregon, February 20, 1908
- ItemWWASPSL3-015 - Spokane, Portland, and Seattle (SP&S) Vancouver Bridge at North Portland, Oregon, February 22, 1908
- ItemWWASPSL3-016 - Spokane, Portland, and Seattle (SP&S) Vancouver Bridge at North Portland, Oregon, January 3, 1908
- ItemWWASPSL3-017 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, circa 1908
- ItemWWASPSL3-018 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, October 25, 1907
- ItemWWASPSL3-019 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, October 21, 1906
- ItemWWASPSL3-020 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, October 25, 1907
- ItemWWASPSL3-021 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, October 4, 1907
- ItemWWASPSL3-022 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, October 25, 1907
- 71 more...