Railroad Archives Online
- FondsD0288 - Terence Wahl Collection
- Cyfres003 - Great Northern Railway Company (U.S.)
- Is-gyfres014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 004 - Railroad Passenger Cars
- EitemTRWahl0028 - Great Northern Passenger Car, Bellingham, Washington, undated
- EitemTRWahl0049 - Great Northern Passenger Car 977, Bellingham, Washington, undated
- EitemTRWahl0065 - Great Northern Observation Car, Bellingham, Washington, undated
- EitemTRWahl0098 - Great Northern Railway Post Office Car 69, Bellingham, Washington, undated
- EitemTRWahl0099 - Great Northern Railway Post Office Car 69, Bellingham, Washington, undated
- 77 mwy...