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 3001 - Bridges
- ItemTRWahl0072 - Great Northern Bridge , Bellingham, Washington, undated
- ItemTRWahl0086 - Great Northern Bridge 59, Bellingham, Washington, undated
- ItemTRWahl0087 - Great Northern Bridge 59, Bellingham, Washington, undated
- ItemTRWahl0088 - Great Northern Bridge 59, Bellingham, Washington, undated
- ItemTRWahl0089 - Great Northern Bridge 59, Bellingham, Washington, undated
- ItemTRWahl0090 - Great Northern Bridge 59, Bellingham, Washington, undated
- ItemTRWahl0133 - Great Northern Bridge 1699.6, Berne, Washington, undated
- ItemTRWahl0157 - Great Northern Bridge 1700.3, East Portal, Washington, undated
- 18 more...