Railroad Archives Online
- CollectionD0288 - Terence Wahl Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3003 - Maintenance Facilities
- ItemTRWahl0327 - Great Northern Turntable, Bellingham, Washington, undated
- ItemTRWahl0604 - Great Northern Turntable, Bellingham, Washington, undated
- ItemTRWahl0814 - Great Northern Turntable, Bellingham, Washington, undated
- ItemTRWahl0815 - Great Northern Maintenance Faciliities, Bellingham, Washington, undated