Railroad Archives Online
- CollectionD0288 - Terence Wahl Collection
- Series002 - Chicago, Milwaukee, St. Paul, and Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel Locomotives
- 16 more...
- ItemTRWahl0860 - Milwaukee Road Diesel Locomotive 1637, Bellingham, Washington, undated
- ItemTRWahl0861 - Milwaukee Road Diesel Locomotive 2023, Bellingham, Washington, undated
- ItemTRWahl0867 - Milwaukee Road Diesel Locomotive 2225, Bellingham, Washington, undated
- ItemTRWahl0868 - Milwaukee Road Diesel Locomotive 1637, Bellingham, Washington, undated
- ItemTRWahl0869 - Milwaukee Road Diesel Locomotive 1637, Bellingham, Washington, undated
- ItemTRWahl0870 - Milwaukee Road Diesel Locomotive 2225, Bellingham, Washington, undated
- ItemTRWahl0872 - Milwaukee Road Diesel Locomotive 2225, Bellingham, Washington, undated
- ItemTRWahl0873 - Milwaukee Road Diesel Locomotive 2225, Bellingham, Washington, undated
- ItemTRWahl0874 - Milwaukee Road Diesel Locomotive 2225, Bellingham, Washington, undated
- 14 more...