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
- 55 more...
- ItemWWASPSD1-056 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 50, undated
- ItemWWASPSD1-057 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 50, undated
- ItemWWASPSD1-058 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 50, undated
- ItemWWASPSD1-059 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 51, undated
- ItemWWASPSD1-060 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 51, undated
- ItemWWASPSD1-061 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 51, undated
- ItemWWASPSD1-062 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 51, undated
- ItemWWASPSD1-063 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 51, undated
- ItemWWASPSD1-064 - Spokane, Portland and Seattle (SP&S) Diesel Locomotive Number 52, Portland, Oregon, May 1, 1946
- 198 more...