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
- 10 more...
- ItemWWASPSL1-083 - Spokane, Portland, and Seattle (SP&S) Willamette River Bridge, East Saint Johns, Oregon, June 1914
- ItemWWASPSL1-084 - Spokane, Portland, and Seattle (SP&S) Willamette River Bridge, East Saint Johns, Oregon, undated
- ItemWWASPSL1-087 - Spokane, Portland, and Seattle (SP&S) Damaged Trestle, June 4, 1948
- ItemWWASPSL1-088 - Spokane, Portland, and Seattle (SP&S) Damaged Trestle, June 5, 1948
- ItemWWASPSL1-089 - Spokane, Portland, and Seattle (SP&S) Damaged Trestle, undated
- ItemWWASPSL3-001 - Spokane, Portland, and Seattle (SP&S) Bridge Piers at North Portland, Oregon, March 21, 1908
- ItemWWASPSL3-002 - Spokane, Portland, and Seattle (SP&S) Bridge Piers at North Portland, Oregon, November 7, 1907
- ItemWWASPSL3-003 - Spokane, Portland, and Seattle (SP&S) Bridge Piers at North Portland, Oregon, April 21, 1907
- ItemWWASPSL3-004 - Spokane, Portland, and Seattle (SP&S) Bridge Girders at North Portland, Oregon, April 1, 1908
- 89 more...