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
- 500 more...
- ItemJMF00-00093.0 - Northern Pacific steam locomotive 36 at Butte, Montana, in 1949.
- ItemJMF00-00094.0 - Northern Pacific steam locomotive 36 at Missoula, Montana, in 1954.
- ItemJMF00-00095.0 - Northern Pacific steam locomotive 39 at Brainerd, Minnesota, in 1950.
- ItemJMF00-00096.0 - Northern Pacific steam locomotive 39 in 1916.
- ItemJMF00-00096.1 - Northern Pacific steam locomotive 40 at Mandan, North Dakota, in 1934.
- ItemJMF00-00096.2 - Northern Pacific steam locomotive 45, circa 1910.
- ItemJMF00-00096.3 - Northern Pacific steam locomotive 43 at Auburn, Washington, in 1937.
- ItemJMF00-00097.0 - Northern Pacific steam locomotive 46 in 1916.
- ItemJMF00-00097.1 - Northern Pacific steam locomotive 46 circa 1910.
- 2136 more...