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
- 653 more...
- ItemJMF00-00187.0 - Northern Pacific steam locomotive 500, circa 1898.
- ItemJMF00-00188.0 - Northern Pacific steam locomotive 520, circa 1915.
- ItemJMF00-00189.0 - Northern Pacific steam locomotive 545, circa 1915.
- ItemJMF00-00190.0 - Northern Pacific steam locomotive 545, circa 1920.
- ItemJMF00-00191.0 - Northern Pacific steam locomotive 558 at St. Paul, Minnesota, circa 1939.
- ItemJMF00-00192.0 - Northern Pacific steam locomotive 570 in 1916.
- ItemJMF00-00193.0 - Northern Pacific steam locomotive 581, circa 1920.
- ItemJMF00-00194.0 - Northern Pacific steam locomotive 590 in 1916.
- ItemJMF00-00195.0 - Northern Pacific steam locomotive 591, circa 1890.
- 1983 more...