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
- 2636 more...
- ItemJMF00-01837.0 - Northern Pacific steam locomotive 5146 at Laurel, Montana, in 1953.
- ItemJMF00-01838.0 - Northern Pacific steam locomotive 5147 at Livingston, Montana, in 1952.
- ItemJMF00-01839.0 - Northern Pacific steam locomotive 5147 at Livingston, Montana, in 1952.
- ItemJMF00-01840.0 - Northern Pacific steam locomotive 5149 at Laurel, Montana, in 1954.
- ItemJMF20-06308.0 - Northern Pacific Railway steam locomotive 1372 at Kenmore, Washington on December 02, 1956.
- ItemJMF20-06309.0 - Northern Pacific Railway steam locomotive 1603 at Shelton, Washington, circa 1938.
- ItemJMF20-06309.1 - Northern Pacific Railway steam locomotive 1603 at Shelton, Washington, circa 1938.
- ItemJMF20-06301.0 - Northern Pacific Railway steam locomotive 2602 at Ravensdale, Washington in 1947.
- ItemJMF21-05219.0 - Pacific Railway & Navigation Company steam locomotive 1, circa 1911.