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
- 1429 more...
- 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.
- ItemJMF00-00760.1 - Northern Pacific steam locomotive 1621 at Tacoma, Washington, in 1935.
- ItemJMF00-00760.2 - Northern Pacific steam locomotive 1621, circa 1950.
- ItemJMF00-00761.0 - Northern Pacific steam locomotive 1624 at South Tacoma, Washington, in 1955.
- ItemJMF00-00761.1 - Northern Pacific steam locomotive 1624 at Missoula, Montana, in 1934.
- ItemJMF00-00762.0 - Northern Pacific steam locomotive 1625 at Tacoma, Washington, in 1937.
- ItemJMF00-00763.0 - Northern Pacific steam locomotive 1627 at Laurel, Montana, in 1953.
- ItemJMF00-00764.0 - Northern Pacific steam locomotive 1627 at Laurel, Montana, in 1954.
- 1207 more...