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
- 3 more...
- ItemJMF03-01843.0 - Northern Pacific diesel locomotive number 100 at Brainerd, Minnesota, in 1950.
- ItemJMF03-01844.0 - Northern Pacific diesel locomotive number 101 at Seattle, Washington, in 1944.
- ItemJMF03-01845.0 - Northern Pacific diesel locomotive number 101 at Northtown, Minnesota, in 1954.
- ItemJMF03-01846.0 - Northern Pacific diesel locomotive number 107 circa 1950.
- ItemJMF03-01847.0 - Northern Pacific diesel locomotive number 112 at Auburn, Washington, circa 1949.
- ItemJMF03-01848.0 - Northern Pacific diesel locomotive number 120 at Auburn, Washington, circa 1949.
- ItemJMF03-01849.0 - Northern Pacific diesel locomotive number 120 at Auburn, Washington, circa 1949.
- ItemJMF03-01850.0 - Northern Pacific diesel locomotive number 120 circa 1949.
- ItemJMF03-01851.0 - Northern Pacific diesel locomotive number 121 circa 1949.
- 637 more...