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
- 648 more...
- ItemJMF00-00181.0 - Northern Pacific steam locomotive 423 at Elma, Washington, circa 1900.
- ItemJMF00-00182.0 - Northern Pacific steam locomotive 464, circa 1915.
- ItemJMF00-00183.0 - Northern Pacific steam locomotive 486 at Cosmopolis, Washington, circa 1915.
- ItemJMF00-00184.0 - Northern Pacific steam locomotive 488 at Pe Ell, Washington, in 1906.
- ItemJMF00-00185.0 - Northern Pacific steam locomotive 490 in 1916.
- ItemJMF00-00187.0 - Northern Pacific steam locomotive 500, circa 1898.
- ItemJMF00-00188.0 - Northern Pacific steam locomotive 520, circa 1915.
- ItemJMF00-00189.0 - Northern Pacific steam locomotive 545, circa 1915.
- ItemJMF00-00190.0 - Northern Pacific steam locomotive 545, circa 1920.
- 1988 more...