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
- 1285 more...
- ItemJMF00-00664.0 - Northern Pacific steam locomotive 1506 at Spokane, Washington, in 1941.
- ItemJMF00-00665.0 - Northern Pacific steam locomotive 1507 at Tacoma-15th St. Tower, Washington, in 1943.
- ItemJMF00-00666.0 - Northern Pacific steam locomotive 1507 at Livingston, Montana, in 1954.
- ItemJMF00-00666.1 - Northern Pacific steam locomotive 1507 at Seattle, Washington, in 1935.
- ItemJMF00-00666.2 - Northern Pacific steam locomotive 1507 at Tacoma, Washington, in 1935.
- ItemJMF00-00666.3 - Northern Pacific steam locomotive 1507 at Seattle, Washington, in 1935.
- ItemJMF00-00666.4 - Northern Pacific steam locomotive 1507 at Tacoma, Washington, in 1956.
- ItemJMF00-00667.0 - Northern Pacific steam locomotive 1508 at Thrall, Washington, in 1941.
- ItemJMF00-00667.1 - Northern Pacific steam locomotive 1508 at Tacoma, Washington, in 1936.
- 1351 more...