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
- 8 more...
- 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.
- ItemJMF03-01852.0 - Northern Pacific diesel locomotive number 124 circa 1949.
- ItemJMF03-01853.0 - Northern Pacific diesel locomotive number 126 at Tacoma, Washington, circa 1943.
- ItemJMF03-01853.1 - Northern Pacific diesel locomotive number 126 at Tacoma, Washington, circa 1943.
- ItemJMF03-01853.2 - Northern Pacific diesel locomotive number 126 at Tacoma, Washington, circa 1943.
- ItemJMF03-01855.0 - Northern Pacific diesel locomotive number 126 at Bozeman, Montana, in 1955.
- 632 more...