Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series007 - Spokane, Portland, and Seattle Railway
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3004 - Railroad Passenger Cars
- 5 more...
- ItemWWASPSL2-013 - Spokane, Portland, and Seattle (SP&S) Train Number 3 at the Depot, Washougal, Washington, undated
- ItemWWASPSL2-060 - Spokane, Portland, and Seattle (SP&S) Passenger Train, "United Nations Victory Special", North Bonneville, Washington, April 25, 1945
- ItemWWASPSL2-061 - Spokane, Portland, and Seattle (SP&S) Passenger Train, "United Nations Victory Special", North Bonneville, Washington, April 25, 1945
- ItemWWASPSL2-062 - Spokane, Portland, and Seattle (SP&S) Passenger Train, "United Nations Victory Special", North Bonneville, Washington, April 25, 1945
- ItemWWASPSL4-007 - Spokane, Portland, and Seattle (SP&S) Passenger Train, September 16, 1948
- ItemWWASPSL4-013 - Spokane, Portland, and Seattle (SP&S) Passenger Train between Vancouver and Wishram, Washington, September 16, 1948
- ItemWWASPSL4-089 - Spokane, Portland, and Seattle (SP&S) Passenger Cars, Washington State, undated
- ItemWWASPSL6-036 - Spokane, Portland, and Seattle (SP&S) Coach on Goldendale Branch , Washington, undated
- ItemWWASPSL7-126 - Spokane, Portland, and Seattle (SP&S) Passenger cars, Washington State, undated
- 73 more...