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
- 80 more...
- ItemWWASPSL6-007 - Spokane, Portland, and Seattle (SP&S) Bridge G-2-1 on Goldendale Branch, Washington, October 1958
- ItemWWASPSL6-009 - Spokane, Portland, and Seattle (SP&S) Bridge G-2-1 on Goldendale Branch, Washington, October 1958
- ItemWWASPSL6-010 - Spokane, Portland, and Seattle (SP&S) Bridge G-2-1 on Goldendale Branch, Washington, October 1958
- ItemWWASPSL6-011 - Spokane, Portland, and Seattle (SP&S) Bridge G-2-1 on Goldendale Branch, Washington, October 1958
- ItemWWASPSL7-010 - Spokane, Portland, and Seattle (SP&S) Bridge, Washington State, undated
- ItemWWASPSL7-020 - Spokane, Portland, and Seattle (SP&S) Trestle, Washington State, undated
- ItemWWASPSL7-026 - Spokane, Portland, and Seattle (SP&S) Trestle, Washington State, undated
- ItemWWASPSL7-027 - Spokane, Portland, and Seattle (SP&S) Trestle, Washington State, undated
- ItemWWASPSL7-044 - Spokane, Portland, and Seattle (SP&S) High Trestle, Washington State, undated
- 19 more...