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
- 2572 more...
- ItemJMF00-01777.0 - Northern Pacific steam locomotive 5121 at Helena, Montana, circa 1952.
- ItemJMF00-01778.0 - Northern Pacific steam locomotive 5121 at Missoula, Montana, circa 1955.
- ItemJMF00-01779.0 - Northern Pacific steam locomotive 5122 at Missoula, Montana, in 1943.
- ItemJMF00-01780.0 - Northern Pacific steam locomotive 5122 at Garrison, Montana, in 1953.
- ItemJMF00-01781.0 - Northern Pacific steam locomotive 5123 at Missoula, Montana, in 1943.
- ItemJMF00-01782.0 - Northern Pacific steam locomotive 5123 at Livingston, Montana, in 1953.
- ItemJMF00-01783.0 - Northern Pacific steam locomotive 5123 at Livingston, Montana, circa 1955.
- ItemJMF00-01784.0 - Northern Pacific steam locomotive 5123 at Livingston, Montana, in 1955.
- ItemJMF00-01785.0 - Northern Pacific steam locomotive 5124 at Livingston, Montana, in 1954.
- 64 more...