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
- 154 more...
- ItemJMF03-01995.0 - Northern Pacific diesel locomotive number 556 at Spokane, Washington, in 1952.
- ItemJMF03-01996.0 - Northern Pacific diesel locomotive number 557 at Arlington, Washington, in 1952.
- ItemJMF03-01997.0 - Northern Pacific diesel locomotive number 557 at Tacoma, Washington, in 1970.
- ItemJMF03-01998.0 - Northern Pacific diesel locomotive number 558 at Tacoma, Washington, in 1967.
- ItemJMF03-01998.1 - Northern Pacific diesel locomotive number 558 at Auburn, Washington, in 1954.
- ItemJMF03-01999.0 - Northern Pacific diesel locomotive number 563 at Auburn, Washington, in 1970.
- ItemJMF03-02000.0 - Northern Pacific diesel locomotive number 569 at Garrison, Montana, in 1955.
- ItemJMF03-02001.0 - Northern Pacific diesel locomotive number 569 at Garrison, Montana, in 1955.
- ItemJMF03-02002.0 - Northern Pacific diesel locomotive number 602 at Fargo, North Dakota, in 1950.
- 486 more...