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 3004 - Railroad Passenger Cars
- 75 more...
- ItemTRWahl1057 - Great Northern Passenger Train, Bellingham, Washington, undated
- ItemTRWahl1067 - Great Northern Passenger Car 995, Bellingham, Washington, undated
- ItemTRWahl1088 - Great Northern Passenger Train, Bellingham, Washington, undated
- ItemTRWahl0061 - Great Northern Passenger Train, Trinidad, Washington, undated
- ItemTRWahl0062 - Great Northern Passenger Train, Voltage, Washington, undated
- ItemTRWahl0063 - Great Northern Passenger Train, eastern Washington, Washington, undated
- ItemTRWahl0320 - Great Northern Diesel Locomotive, South Bellingham, Washington, undated