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
- 75 more...
- ItemJMF03-01919.0 - Northern Pacific diesel locomotive number 239 at Auburn, Washington, in 1970.
- ItemJMF03-01920.0 - Northern Pacific diesel locomotive number 239 at Auburn, Washington, in 1970.
- ItemJMF03-01921.0 - Northern Pacific diesel locomotive number 239 at Auburn, Washington, in 1970.
- ItemJMF03-01922.0 - Northern Pacific diesel locomotive number 240 at Tacoma, Washington, in 1967.
- ItemJMF03-01923.0 - Northern Pacific diesel locomotive number 240 at Tacoma, Washington, in 1970.
- ItemJMF03-01924.0 - Northern Pacific diesel locomotive number 248 at Tacoma, Washington, in 1970.
- ItemJMF03-01924.1 - Northern Pacific diesel locomotive number 248 at Tacoma, Washington, in 1967.
- ItemJMF03-01925.0 - Northern Pacific diesel locomotive number 248 at Tacoma, Washington, in 1970.
- ItemJMF03-01926.0 - Northern Pacific diesel locomotive number 249 at Tacoma, Washington, in 1970.
- 565 more...