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
- 364 more...
- ItemJMF03-02195.1 - Northern Pacific diesel locomotive number 6700 at East Auburn, Washington, in 1954.
- ItemJMF03-02196.0 - Northern Pacific diesel locomotive number 6703 at Tacoma, Washington, in 1967.
- ItemJMF03-02197.0 - Northern Pacific diesel locomotive number 7000 at Yakima, Washington.
- ItemJMF03-02198.0 - Northern Pacific diesel locomotive number 7000 at Livingston, Montana, in 1954.
- ItemJMF03-02198.1 - Northern Pacific diesel locomotive on display at Livingston, Montana, circa 1955.
- ItemJMF03-02199.0 - Northern Pacific diesel locomotive number 7001 at Auburn, Washington, in 1967.
- ItemJMF03-02200.0 - Northern Pacific diesel locomotive number 7001 at Tacoma, Washington, in 1970.
- ItemJMF03-02201.0 - Northern Pacific diesel locomotive number 7001 at Auburn, Washington, in 1967.
- ItemJMF03-02202.0 - Northern Pacific diesel locomotive number 7001 at Auburn, Washington, in 1968.
- 276 more...