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
- 402 more...
- ItemJMF03-02227.0 - Northern Pacific diesel locomotive number 6509 at Tacoma, Washington, in 1967.
- ItemJMF03-02228.0 - Northern Pacific diesel locomotive number 6007 at Auburn, Washington, in 1970.
- ItemJMF03-02229.0 - Northern Pacific diesel locomotive number 6 at South Tacoma, Washington, in 1957.
- ItemJMF01-03341.0 - Northern Pacific North Coast Limited at Martin, Washington, in 1945.
- ItemJMF01-03343.0 - Northern Pacific North Coast Limited at Auburn, Washington, in 1945.
- ItemJMF01-03344.0 - Northern Pacific North Coast Limited at Easton, Washington, in 1950.
- ItemJMF01-03344.1 - Northern Pacific diesel locomotive 6505 at Easton, Washington, in 1950.
- ItemJMF01-03346.0 - Northern Pacific diesel locomotives at Easton, Washington, in 1950.
- ItemJMF01-03346.1 - Northern Pacific diesel locomotive running gear at Easton, Washington, in 1950.
- 238 more...