Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series010 - Other Railroads
- Subseries Level 1014 - Photographs
- Subseries Level 2002 - Railroad Employees
- ItemWWASPSL7-137 - Oregon Trunk Railway (OT) Work Crew, Bend, Oregon, circa 1956
- ItemWWASPSL7-138 - Oregon Trunk Railway (OT) Work Crew, Bend, Oregon, circa 1956
- ItemWWASPSL6-002 - Columbia River and Northern Railway Construction Crew at Goldendale, Washington, undated
- ItemWWASPSL8-072 - Astoria and Columbia River Railroad Work Crew, Oregon, circa 1898