Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series007 - Spokane, Portland, and Seattle Railway
- Subseries Level 1014 - Photographs
- Subseries Level 2002 - Railroad Employees
- 24 more...
- ItemWWASPSL7-139 - Spokane, Portland, and Seattle (SP&S) Tunnel Collapse, Washington State, undated
- ItemWWASPSL7-142 - Spokane, Portland, and Seattle (SP&S) Train Crew, Oregon State, undated
- ItemWWASPSL7-143 - Spokane, Portland, and Seattle (SP&S) Train Crew, Oregon State, undated
- ItemWWASPSL8-113 - Spokane, Portland, and Seattle (SP&S) Shop Crew at Astoria, Oregon, undated
- ItemWWASPSL1-031 - Spokane, Portland, and Seattle (SP&S) Employees, Portland, Oregon, August 8, 1950
- ItemWWASPSL1-032 - Spokane, Portland, and Seattle (SP&S) Empire Builder Inaugural Run, Portland, Oregon, undated
- ItemWWASPSL3-107 - Spokane, Portland, and Seattle (SP&S) Railway Employees at Vancouver, Washington, December 19, 1927
- ItemWWASPSL3-108 - Spokane, Portland, and Seattle (SP&S) Railway Employees at Vancouver, Washington, December 19, 1927
- ItemWWASPSL3-109 - Spokane, Portland, and Seattle (SP&S) Railway Employees at Vancouver, Washington, December 16, 1927