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 3002 - Diesel Locomotives
- 193 more...
- ItemTRWahl0971 - Great Northern Diesel Locomotive 271B, Bellingham, Washington, undated
- ItemTRWahl0972 - Great Northern Diesel Locomotive, Bellingham, Washington, undated
- ItemTRWahl0973 - Great Northern Diesel Locomotive 161, Bellingham, Washington, undated
- ItemTRWahl0975 - Great Northern Diesel Locomotive 268A, Bellingham, Washington, undated
- ItemTRWahl0979 - Great Northern Diesel Locomotive, Bellingham, Washington, undated
- ItemTRWahl0980 - Great Northern Diesel Locomotive with Freight Train, Bellingham, Washington, undated
- ItemTRWahl0988 - Great Northern Diesel Locomotive 504, Bellingham, Washington, undated
- ItemTRWahl1017 - Great Northern Diesel Locomotive 350C, Bellingham, Washington, undated
- ItemTRWahl1021 - Great Northern Diesel Locomotive 271A, Bellingham, Washington, undated
- 12 more...