Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2002 - Railroad Employees
- ItemJATGVelocipedeSnohomishSidingC1938 - Great Northern Railway employees near Snohomish, Washington in 1938.