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
- 19 more...
- ItemWWASPSL1-051 - Spokane, Portland, and Seattle (SP&S) Passenger Cars, Freight Cars and Cabooses, Portland, Oregon, undated
- ItemWWASPSL6-061 - Spokane, Portland, and Seattle (SP&S) Passenger Cars near Cliffs, Washington, September 28, 1947
- ItemWWASPSL8-040 - Spokane, Portland, and Seattle (SP&S) Passenger Car 88 at Avon, Oregon, circa 1922
- ItemWWASPS-PC1-006 - Spokane, Portland and Seattle (SP&S) Mail and Baggage Car Number 28, Bend, Oregon, undated
- ItemWWASPS-PC1-007 - Spokane, Portland and Seattle (SP&S) Mail and Baggage Car Number 31, Pasco, Washington, June 1968
- ItemWWASPS-PC1-008 - Spokane, Portland and Seattle (SP&S) Mail and Baggage Car Number 37, Portland, Oregon, August 10, 1949
- ItemWWASPS-PC1-009 - Spokane, Portland and Seattle (SP&S) Mail and Baggage Car Number 41 (2nd), Portland, Oregon, undated
- ItemWWASPS-PC1-010 - Spokane, Portland and Seattle (SP&S) Mail and Baggage Car Number 41 (2nd), Portland, Oregon, undated
- ItemWWASPS-PC1-015 - Spokane, Portland and Seattle (SP&S) Mail and Baggage Car Number 44, Portland, Oregon, August 10, 1949
- 59 more...