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
- 2410 more...
- ItemJMF00-01620.0 - Northern Pacific steam locomotive 4011, circa 1919.
- ItemJMF00-01621.0 - Northern Pacific steam locomotive 4011 at Lester, Washington, circa 1912.
- ItemJMF00-01622.0 - Northern Pacific steam locomotive 4011 at Tacoma, Washington, in 1935.
- ItemJMF00-01623.0 - Northern Pacific steam locomotive 4011 at Stampede, Washington, circa 1919.
- ItemJMF00-01624.0 - Northern Pacific steam locomotive 4012 at Easton, Washington, in 1943.
- ItemJMF00-01625.0 - Northern Pacific steam locomotive 4012 at Lester, Washington, circa 1919.
- ItemJMF00-01625.1 - Northern Pacific steam locomotive 4012 at South Tacoma, Washington, circa 1938.
- ItemJMF00-01626.0 - Northern Pacific steam locomotive 4013 at Lester, Washington, circa 1915.
- ItemJMF00-01627.0 - Northern Pacific steam locomotive 4013 at Easton, Washington, in 1944.
- 226 more...