Railroad Archives Online
- CollectionD0288 - Terence Wahl Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3003 - Freight Cars
- 16 more...
- ItemTRWahl0525 - Northern Pacific Boxcar 5990, Bellingham, Washington, undated
- ItemTRWahl0581 - Northern Pacific Chip Car 118305, Bellingham, Washington, undated
- ItemTRWahl0585 - Northern Pacific Boxcar 5961, Bellingham, Washington, undated
- ItemTRWahl0592 - Northern Pacific Gondola 50584, Bellingham, Washington, undated
- ItemTRWahl0594 - Northern Pacific Gondola 50716, Bellingham, Washington, undated
- ItemTRWahl0616 - Northern Pacific Boxcar 8031, Bellingham, Washington, undated
- ItemTRWahl0676 - Northern Pacific Flat Car 60308, Bellingham, Washington, undated
- ItemTRWahl0677 - Northern Pacific Flat Car 60308, Bellingham, Washington, undated
- ItemTRWahl0680 - Northern Pacific Boxcar 6004, Bellingham, Washington, undated
- 13 more...