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 3001 - Steam locomotives
- 1791 more...
- ItemJMF00-01063.0 - Northern Pacific steam locomotive 1830 at South Tacoma, Washington, in 1952.
- ItemJMF00-01064.0 - Northern Pacific steam locomotive 1830 at Yakima, Washington, in 1937.
- ItemJMF00-01065.0 - Northern Pacific steam locomotive 1831 at Spokane, Washington, in 1951.
- ItemJMF00-01066.0 - Northern Pacific steam locomotive 1831 at Livingston, Montana, in 1954.
- ItemJMF00-01067.0 - Northern Pacific steam locomotive 1831 at Spokane, Washington, in 1950.
- ItemJMF00-01068.0 - Northern Pacific steam locomotive 1831 at Livingston, Montana, in 1954.
- ItemJMF00-01069.0 - Northern Pacific steam locomotive 1832 at Brainerd, Minnesota, in 1950.
- ItemJMF00-01070.0 - Northern Pacific steam locomotive 1834 at Glendive, Montana, in 1953.
- ItemJMF00-01071.0 - Northern Pacific steam locomotive 1836 at Brainerd, Minnesota, in 1950.
- 845 more...