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
- 369 more...
- 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.
- ItemJMF03-02203.0 - Northern Pacific diesel locomotive number 7002 at Auburn, Washington, in 1968.
- ItemJMF03-02204.0 - Northern Pacific diesel locomotive number 7004 at Auburn, Washington, in 1967.
- ItemJMF03-02205.0 - Northern Pacific diesel locomotive number 7004 at Livingston, Montana.
- ItemJMF03-02206.0 - Northern Pacific diesel locomotive number 7004 at Auburn, Washington, in 1968.
- ItemJMF03-02207.0 - Northern Pacific diesel locomotive number 7004 at Auburn, Washington, in 1968.
- 271 more...