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
- 43 more...
- ItemWWASPSL3-029 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, November 19, 1907
- ItemWWASPSL3-030 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, August 30, 1907
- ItemWWASPSL3-031 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, April 24, 1908
- ItemWWASPSL3-032 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, October 10, 1906
- ItemWWASPSL3-033 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, January 9, 1908
- ItemWWASPSL3-034 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, May 3, 1907
- ItemWWASPSL3-035 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, February 22, 1908
- ItemWWASPSL3-036 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, February 22, 1908
- ItemWWASPSL3-037 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, undated
- 56 more...