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
- 1969 more...
- ItemJMF00-01219.0 - Northern Pacific steam locomotive 2168 at St. Paul, Minnesota, in 1946.
- ItemJMF00-01219.1 - Northern Pacific steam locomotive 2168 at Tacoma, Washington, in 1936.
- ItemJMF00-01220.0 - Northern Pacific steam locomotive 2168 at Tacoma, Washington, in 1936.
- ItemJMF00-01221.0 - Northern Pacific steam locomotive 2169 at Brainerd, Minnesota, in 1950.
- ItemJMF00-01222.0 - Northern Pacific steam locomotive 2169 in 1916.
- ItemJMF00-01223.0 - Northern Pacific steam locomotive 2170 at Tacoma, Washington, in 1935.
- ItemJMF00-01224.B - Northern Pacific steam locomotive 2176 in 1916.
- ItemJMF00-01225.0 - Northern Pacific steam locomotive 2182 at Mandan, North Dakota, in 1946.
- ItemJMF00-01226.0 - Northern Pacific steam locomotive 2184 at Seattle, Washington, in 1935.
- 667 more...