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 3001 - Steam Locomotives
- 937 more...
- ItemWWASPSS-06-099 - Spokane, Portland and Seattle (SP&S) Steam Locomotive Number 531, Portland, Oregon, undated
- ItemWWASPSS-06-100 - Spokane, Portland and Seattle (SP&S) Steam Locomotive Number 531, Pasco, Washington, October 1952
- ItemWWASPSS-06-101 - Spokane, Portland and Seattle (SP&S) Steam Locomotive Number 531, Vancouver, Washington, September 9, 1953
- ItemWWASPSS-06-102 - Spokane, Portland and Seattle (SP&S) Steam Locomotive Number 531, Vancouver, Washington, April 1953
- ItemWWASPSS-06-103 - Spokane, Portland and Seattle (SP&S) Steam Locomotive Number 532, undated
- ItemWWASPSS-06-104 - Spokane, Portland and Seattle (SP&S) Steam Locomotive Number 532, Portland, Oregon, November 20, 1947
- ItemWWASPSS-06-105 - Spokane, Portland and Seattle (SP&S) Steam Locomotive Number 533, Portland, Oregon, undated
- ItemWWASPSS-06-106 - Spokane, Portland and Seattle (SP&S) Steam Locomotive Number 533, Portland, Oregon, September 23, 1944
- ItemWWASPSS-06-107 - Spokane, Portland and Seattle (SP&S) Steam Locomotive Number 533, Portland, Oregon, August 1946
- 4 more...