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
- 1473 more...
- 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.
- ItemJMF00-00799.0 - Northern Pacific steam locomotive 1667 at Paradise, Montana, in 1954.
- ItemJMF00-00800.0 - Northern Pacific steam locomotive 1667 at South Tacoma, Washington, in 1938.
- ItemJMF00-00800.1 - Northern Pacific steam locomotive 1668 at Dilworth, Minnesota, in 1934.
- ItemJMF00-00801.0 - Northern Pacific steam locomotive 1670 at Hoquiam, Washington, in 1945.
- ItemJMF00-00801.1 - Northern Pacific steam locomotive 1670 at Tacoma, Washington, in 1935.
- ItemJMF00-00802.0 - Northern Pacific steam locomotive 1672 at South Tacoma, Washington, in 1948.
- ItemJMF00-00803.0 - Northern Pacific steam locomotive 1672, circa 1950.
- 1163 more...