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
- 486 more...
- ItemJMF00-00081.0 - Northern Pacific steam locomotive 30 at Tacoma, Washington, in 1946.
- ItemJMF00-00082.0 - Northern Pacific steam locomotive 31 at Helena, Montana, in 1955.
- ItemJMF00-00083.0 - Northern Pacific steam locomotive 32 at Missoula, Montana, in 1943.
- ItemJMF00-00084.0 - Northern Pacific steam locomotive 33 at Missoula, Montana, in 1953.
- ItemJMF00-00085.0 - Northern Pacific steam locomotive 33 at Missoula, Montana, in 1953.
- ItemJMF00-00086.0 - Northern Pacific steam locomotive 34 at Billings, Montana, in 1953.
- ItemJMF00-00087.0 - Northern Pacific steam locomotive 34 at Northtown, Minnesota, in 1954.
- ItemJMF00-00088.0 - Northern Pacific steam locomotive 35 at Butte, Montana, in 1949.
- ItemJMF00-00088.5 - Northern Pacific steam locomotive 35 at Butte, Montana, in 1949.
- 2150 more...