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
- 48 more...
- 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
- ItemWWASPSL3-038 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, January 31, 1908
- ItemWWASPSL3-039 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, circa 1908
- ItemWWASPSL3-040 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at North Portland, Oregon, April 16, 1908
- ItemWWASPSL3-041 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, circa 1908
- ItemWWASPSL3-045 - Spokane, Portland, and Seattle (SP&S) Columbia River Bridge at Vancouver, Washington, January 2, 1913
- 51 more...