Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series007 - Spokane, Portland, and Seattle Railway
- Subseries Level 1014 - Photographs
- Subseries Level 2002 - Railroad Employees
- ItemWWASPSL3-105 - Spokane, Portland, and Seattle (SP&S) Railway Employees at Vancouver, Washington, December 4, 1927
- ItemWWASPSL3-106 - Spokane, Portland, and Seattle (SP&S) Railway Employees at Vancouver, Washington, December 20, 1927
- ItemWWASPSL3-110 - Spokane, Portland, and Seattle (SP&S) Railway Employees at Vancouver, Washington, December 13, 1927
- ItemWWASPSL3-111 - Spokane, Portland, and Seattle (SP&S) Railway Employees at Vancouver, Washington, undated
- ItemWWASPSL3-112 - Spokane, Portland, and Seattle (SP&S) Railway Employees at Vancouver, Washington, undated
- ItemWWASPSL4-107 - Spokane, Portland, and Seattle (SP&S) Railway Employees, Washington State, undated
- 27 more...