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 3001 - Steam Locomotives
- 4 more...
- ItemTRWahl0383 - Milwaukee Road Steam Locomotive 1220, Bellingham, Washington, undated
- ItemTRWahl0429 - Milwaukee Road Steam Locomotive 1494, Bellingham, Washington, undated
- ItemTRWahl0430 - Milwaukee Road Steam Locomotive 1494, Bellingham, Washington, undated
- ItemTRWahl0483 - Milwaukee Road Steam Locomotive 1438, Bellingham, Washington, undated
- ItemTRWahl0672 - Milwaukee Road Steam Locomotive 1476, Seattle, Washington, undated
- ItemTRWahl1096 - Milwaukee Road Steam Locomotive 1494, Bellingham, Washington, undated
- ItemTRWahl1097 - Milwaukee Road Steam Locomotive 1494, Bellingham, Washington, undated