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
- 1750 more...
- ItemJMF00-01027.0 - Northern Pacific steam locomotive 1818 at Missoula, Montana, in 1943.
- ItemJMF00-01028.0 - Northern Pacific steam locomotive 1819 at Brainerd, Minnesota, in 1954.
- ItemJMF00-01029.0 - Northern Pacific steam locomotive 1819 at Brainerd, Minnesota, in 1954.
- ItemJMF00-01030.0 - Northern Pacific steam locomotive 1820 at Pasco, Washington, in 1953.
- ItemJMF00-01031.0 - Northern Pacific steam locomotive 1820 at South Tacoma, Washington, in 1954.
- ItemJMF00-01032.0 - Northern Pacific steam locomotive 1820 at South Tacoma, Washington, in 1934.
- ItemJMF00-01033.0 - Northern Pacific steam locomotive 1821 at Tacoma, Washington, in 1948.
- ItemJMF00-01034.0 - Northern Pacific steam locomotive 1821 at Auburn, Washington, in 1953.
- ItemJMF00-01035.0 - Northern Pacific steam locomotive 1821 at Auburn, Washington, in 1953.
- 886 more...