Railroad Archives Online
- CollectionD0288 - Terence Wahl Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3003 - Freight Cars
- 9 more...
- ItemTRWahl0121 - Great Northern Trailer on Flat Car 60230, Bellingham, Washington, undated
- ItemTRWahl0122 - Great Northern Trailer on Flat Car 60230, Bellingham, Washington, undated
- ItemTRWahl0123 - Great Northern Boxcar 25947, Bellingham, Washington, undated
- ItemTRWahl0124 - Great Northern Boxcar 49801, Bellingham, Washington, undated
- ItemTRWahl0126 - Great Northern Boxcar 48048, Bellingham, Washington, undated
- ItemTRWahl0142 - Great Northern Boxcar 5044, Bellingham, Washington, undated
- ItemTRWahl0143 - Great Northern Boxcar 5044, Bellingham, Washington, undated
- ItemTRWahl0164 - Great Northern Boxcar 35166, Bellingham, Washington, undated
- ItemTRWahl0165 - Great Northern Boxcar 35166, Bellingham, Washington, undated
- 90 more...