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
- 1800 more...
- ItemJMF00-01072.0 - Northern Pacific steam locomotive 1836, circa 1956.
- ItemJMF00-01073.0 - Northern Pacific steam locomotive 1837 at Duluth, Minnesota, in 1954.
- ItemJMF00-01074.0 - Northern Pacific steam locomotive 1837 at Duluth, Minnesota, in 1954.
- ItemJMF00-01075.0 - Northern Pacific steam locomotive 1838 at Livingston, Montana, in 1952.
- ItemJMF00-01076.0 - Northern Pacific steam locomotive 1838 at Livingston, Montana, in 1952.
- ItemJMF00-01077.0 - Northern Pacific steam locomotive 1838, circa 1956.
- ItemJMF00-01078.0 - Northern Pacific steam locomotive 1838 at Tacoma, Washington, in 1938.
- ItemJMF00-01079.0 - Northern Pacific steam locomotive 1839 at Brainerd, Minnesota, in 1954.
- ItemJMF00-01080.0 - Northern Pacific steam locomotive 1841, circa 1938.
- 836 more...