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 3002 - Diesel Locomotives
- 3 more...
- ItemWWASPSD1-004 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 10, Salem, Oregon, July 21, 1947
- ItemWWASPSD1-005 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 10, Portland, Oregon, April 11, 1952
- ItemWWASPSD1-006 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 11, Schenectady, New York, undated
- ItemWWASPSD1-007 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 11, undated
- ItemWWASPSD1-008 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 11, undated
- ItemWWASPSD1-009 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 20, undated
- ItemWWASPSD1-010 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 20, Portland, Oregon, undated
- ItemWWASPSD1-011 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 20, Portland, Oregon, November 14, 1944
- ItemWWASPSD1-012 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 22, Vancouver, Washington, undated
- 250 more...