Railroad Archives Online
- FondsD0011 - James M. Fredrickson Collection
- Série004 - Northern Pacific Railroad Company
- Sous-série014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 001 - Steam locomotives
- 616 en plus...
- PièceJMF00-00153.2 - Northern Pacific steam locomotive 252 at Tacoma, Washington, in 1935.
- PièceJMF00-00154.0 - Northern Pacific steam locomotive 253 in 1916.
- PièceJMF00-00155.0 - Northern Pacific steam locomotive 255 at Portland, Oregon, circa 1915.
- PièceJMF00-00156.0 - Northern Pacific steam locomotive 258, circa 1915.
- PièceJMF00-00157.0 - Northern Pacific steam locomotive 271, circa 1925.
- PièceJMF00-00158.0 - Northern Pacific steam locomotive 321, circa 1946.
- PièceJMF00-00159.0 - Northern Pacific steam locomotive 322 in 1916.
- PièceJMF00-00160.0 - Northern Pacific steam locomotive 328 at Rush City, Minnesota, in 1950.
- PièceJMF00-00161.0 - Northern Pacific steam locomotive 328 at Rush City, Minnesota, in 1950.
- 2020 en plus...