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
- 1810 more...
- ItemJMF00-01082.0 - Northern Pacific steam locomotive 1842 at Helena, Montana, in 1953.
- ItemJMF00-01083.0 - Northern Pacific steam locomotive 1843 at Helena, Montana, in 1951.
- ItemJMF00-01084.0 - Northern Pacific steam locomotive 1843, circa 1954.
- ItemJMF00-01085.0 - Northern Pacific steam locomotive 1844 at Auburn, Washington, in 1926.
- ItemJMF00-01086.0 - Northern Pacific steam locomotive 1844 at Brainerd, Minnesota, circa 1952.
- ItemJMF00-01087.0 - Northern Pacific steam locomotive 1844 at Tacoma, Washington, in 1935.
- ItemJMF00-01088.0 - Northern Pacific steam locomotive 1845 at Tacoma, Washington, in 1935.
- ItemJMF00-01089.0 - Northern Pacific steam locomotive 1845 at Tacoma, Washington, in 1935.
- ItemJMF00-01090.0 - Northern Pacific steam locomotive 1846 at Duluth, Minnesota, in 1950.
- 826 more...