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
- 1466 more...
- ItemJMF00-00790.0 - Northern Pacific steam locomotive 1660, in 1916.
- ItemJMF00-00791.0 - Northern Pacific steam locomotive 1660 at Livingston, Montana, in 1949.
- ItemJMF00-00792.0 - Northern Pacific steam locomotive 1661 at Glendive, Montana, in 1953.
- ItemJMF00-00793.0 - Northern Pacific steam locomotive 1661 at Glendive, Montana, in 1953.
- ItemJMF00-00794.0 - Northern Pacific steam locomotive 1662 at Paradise, Montana, in 1943.
- ItemJMF00-00795.0 - Northern Pacific steam locomotive 1663 at Tacoma, Washington, in 1939.
- ItemJMF00-00796.0 - Northern Pacific steam locomotive 1665, circa 1950.
- ItemJMF00-00797.0 - Northern Pacific steam locomotive 1666 at Dilworth, Minnesota, in 1934.
- ItemJMF00-00798.0 - Northern Pacific steam locomotive 1667 at Paradise, Montana, in 1953.
- 1170 more...