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
- 14 more...
- ItemWWASPSD1-015 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 22, undated
- ItemWWASPSD1-016 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 23, Eugene, Oregon, September 1956
- ItemWWASPSD1-017 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 23, undated
- ItemWWASPSD1-018 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 24, Willbridge, Oregon, undated
- ItemWWASPSD1-019 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 23, undated
- ItemWWASPSD1-020 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 24, Vancouver, Washington, undated
- ItemWWASPSD1-021 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 25, Schenectady, New York, undated
- ItemWWASPSD1-022 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 25, Portland, Oregon, December 1956
- ItemWWASPSD1-023 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 25, Vancouver, Washington, undated
- 239 more...