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
- 1422 more...
- ItemJMF00-00753.0 - Northern Pacific steam locomotive 1621 at Tacoma, Washington, in 1947.
- ItemJMF00-00754.0 - Northern Pacific steam locomotive 1621 at Livingston, Montana, in 1953.
- ItemJMF00-00755.0 - Northern Pacific steam locomotive 1621 at Livingston, Montana, in 1954.
- ItemJMF00-00756.0 - Northern Pacific steam locomotive 1621 at Centralia, Washington, in 1954.
- ItemJMF00-00757.0 - Northern Pacific steam locomotive 1621 at Tacoma, Washington, in 1955.
- ItemJMF00-00757.1 - Northern Pacific steam locomotive 1621 at Tacoma, Washington, circa 1953.
- ItemJMF00-00758.0 - Northern Pacific steam locomotive 1621 at Tacoma, Washington, in 1955.
- ItemJMF00-00759.0 - Northern Pacific steam locomotive 1621 at Tacoma, Washington, in 1935.
- ItemJMF00-00760.0 - Northern Pacific steam locomotive 1621 at Tacoma, Washington, circa 1935.
- 1214 more...