Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel locomotives
- 562 more...
- ItemJMF02-03737.0 - Northern Pacific diesel locomotive 6000 at Martin, Washington, in 1944.
- ItemJMF02-03738.0 - Northern Pacific diesel locomotive 7001D at Martin, Washington, in 1961.
- ItemJMF02-03747.0 - Northern Pacific steam locomotive 5111 at Easton, Washington, in 1944.
- ItemJMF02-03748.0 - Northern Pacific steam locomotive 5116 at Easton, Washington, in 1944.
- ItemJMF02-03751.0 - Northern Pacific diesel locomotive 2523 at Cle Elum, Washington, in 1967.
- ItemJMF02-03756.0 - Northern Pacific diesel locomotive 6001 at Wymer, Washington, in 1944.
- ItemJMF02-03761.0 - Northern Pacific diesel locomotive 6001 at Wymer, Washington, in 1944.
- ItemJMF02-03762.0 - Northern Pacific diesel locomotive 6001 at Wymer, Washington, in 1944.
- ItemJMF02-03764.0 - Northern Pacific diesel locomotive 5407 at Bellevue, Washington, in 1955.
- 78 more...