Railroad Archives Online
- CollectionD0237A - Great Northern Railway Historical Society Cascade Division Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3009 - Electric Locomotives
- ItemGNRHSCD030 - Great Northern Electric Locomotive 5019 near Berne, Washington, undated
- ItemGNRHSCD037 - Great Northern Electric Locomotive 5018 at Skykomish, Washington, July 31, 1956