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
- 666 more...
- ItemJMF00-00200.0 - Northern Pacific steam locomotive 604, circa 1925.
- ItemJMF00-00201.0 - Northern Pacific steam locomotive 605 in 1916.
- ItemJMF00-00202.0 - Northern Pacific steam locomotive 635 at Duluth, Minnesota, in 1916.
- ItemJMF00-00203.0 - Northern Pacific steam locomotive 645 at Mandan, North Dakota, in 1916.
- ItemJMF00-00204.0 - Northern Pacific steam locomotive 650, circa 1920.
- ItemJMF00-00204.1.C - Northern Pacific steam locomotive 649 at the Stillaguamish River, Washington, in 1902.
- ItemJMF00-00205.0 - Northern Pacific steam locomotive 653, circa 1920.
- ItemJMF00-00206.0 - Northern Pacific steam locomotive 653, circa 1927.
- ItemJMF00-00207.0 - Northern Pacific steam locomotive 659, circa 1932.
- 1970 more...