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
- 1600 more...
- ItemJMF00-00897.0 - Northern Pacific steam locomotive 1731 at Auburn, Washington, in 1955.
- ItemJMF00-00897.1 - Northern Pacific steam locomotive 1734 at Moorhead, Minnesota, in 1934.
- ItemJMF00-00898.0 - Northern Pacific steam locomotive 1731 at South Tacoma, Washington, in 1955.
- ItemJMF00-00899.0 - Northern Pacific steam locomotive 1732 at Easton, Washington, in 1945.
- ItemJMF00-00900.0 - Northern Pacific steam locomotive 1734 at Duluth, Minnesota, in 1950.
- ItemJMF00-00901.0 - Northern Pacific steam locomotive 1735 at Livingston, Montana, in 1952.
- ItemJMF00-00902.0 - Northern Pacific steam locomotive 1740 at Brainerd, Minnesota, in 1952.
- ItemJMF00-00903.0 - Northern Pacific steam locomotive 1741, circa 1935.
- ItemJMF00-00904.0 - Northern Pacific steam locomotive 1743, in 1913.
- 1036 more...