Railroad Archives Online
- CollectionD0288 - Terence Wahl Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3001 - Steam Locomotives
- 34 more...
- ItemTRWahl0419 - Northern Pacific Steam Locomotive 1619, Bellingham, Washington, undated
- ItemTRWahl0420 - Northern Pacific Steam Locomotive 1619, Bellingham, Washington, undated
- ItemTRWahl0438 - Northern Pacific Steam Locomotive 1369, Bellingham, Washington, undated
- ItemTRWahl0439 - Northern Pacific Steam Locomotive 1685, Bellingham, Washington, undated
- ItemTRWahl0440 - Northern Pacific Steam Locomotive 1685, Bellingham, Washington, undated
- ItemTRWahl0441 - Northern Pacific Steam Locomotive 1369, Bellingham, Washington, undated
- ItemTRWahl0482 - Northern Pacific Steam Locomotive 1370, Bellingham, Washington, undated
- ItemTRWahl0487 - Northern Pacific Steam Locomotive 1361, Bellingham, Washington, undated
- ItemTRWahl0488 - Northern Pacific Steam Locomotive 1361, Bellingham, Washington, undated
- 53 more...