Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3001 - Steam Locomotives
- 36 more...
- ItemWWANT040 - Northern Pacific steam locomotive 2600 at Seattle, Washington, in 1935.
- ItemWWANT041 - Northern Pacific steam locomotive 2248 at Seattle, Washington, circa 1940.
- ItemWWANT042 - Northern Pacific steam locomotive 2247 at Seattle, Washington, circa 1941.
- ItemWWANT043 - Northern Pacific steam locomotive 2263 at Seattle, Washington, in 1938.
- ItemWWANT045 - Northern Pacific steam locomotive 2208 at Seattle, Washington, circa 1941.
- ItemWWANT047 - Northern Pacific steam locomotive 2603 at Seattle, Washington, in 1941.
- ItemWWANT048 - Northern Pacific steam locomotive 2601 at Seattle, Washington, in 1947.
- ItemWWANT050 - Northern Pacific steam locomotive 2194 at Seattle, Washington, circa 1940.
- ItemWWANT051 - Northern Pacific steam locomotive 252 at Seattle, Washington, circa 1935.
- 223 more...