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 3004 - Railroad Passenger Cars
- ItemTRWahl0436 - Northern Pacific Passenger Car 1370, Seattle, Washington, undated
- ItemTRWahl0437 - Northern Pacific Passenger Train, Seattle, Washington, undated
- ItemTRWahl1092 - Northern Pacific Passenger Train, Seattle, Washington, undated