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
- 950 more...
- ItemJMF00-00418.0 - Northern Pacific steam locomotive 1185 at Yakima, Washington, in 1954.
- ItemJMF00-00418.1 - Northern Pacific steam locomotive 1185 at Laurel, Montana, in 1934.
- ItemJMF00-00419.0 - Northern Pacific steam locomotive 1186 at Laurel, Montana, in 1949.
- ItemJMF00-00420.0 - Northern Pacific steam locomotive 1186 at Laurel, Montana, in 1949.
- ItemJMF00-00420.1 - Northern Pacific steam locomotive 1186 at Laurel, Montana, circa 1950.
- ItemJMF00-00421.0 - Northern Pacific steam locomotive 1186 at Laurel, Montana, in 1953.
- ItemJMF00-00422.0 - Northern Pacific steam locomotive 1187 at Laurel, Montana, in 1949.
- ItemJMF00-00423.0 - Northern Pacific steam locomotive 1187 at Laurel, Montana, in 1954.
- ItemJMF00-00424.0 - Northern Pacific steam locomotive 1188 at Livingston, Montana, in 1953.
- 1686 more...