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
- 26 more...
- ItemTRWahl0838 - Northern Pacific Mechanical Refrigerator Car NPMX 149, Bellingham, Washington, undated
- ItemTRWahl0864 - Northern Pacific Boxcar 8122, Bellingham, Washington, undated
- ItemTRWahl0865 - Northern Pacific Boxcar 8122, Bellingham, Washington, undated
- ItemTRWahl0897 - Northern Pacific Gondola 59226, Bellingham, Washington, undated
- ItemTRWahl0898 - Northern Pacific Gondola 59155, Bellingham, Washington, undated
- ItemTRWahl0935 - Northern Pacific Boxcar 7413, Bellingham, Washington, undated
- ItemTRWahl0966 - Northern Pacific Log Car 122664, Bellingham, Washington, undated
- ItemTRWahl0967 - Northern Pacific Log Car 122664, Bellingham, Washington, undated
- ItemTRWahl1063 - Northern Pacific Boxcar 8029, Bellingham, Washington, undated
- 3 more...