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
- 44 more...
- ItemWWANT051 - Northern Pacific steam locomotive 252 at Seattle, Washington, circa 1935.
- ItemWWANT052 - Northern Pacific steam locomotive 2264 at Seattle, Washington, circa 1940.
- ItemWWANT053 - Northern Pacific steam locomotive 2194 at Seattle, Washington, circa 1940.
- ItemWWANT055 - Northern Pacific steam locomotive 2249 at Seattle, Washington, circa 1940.
- ItemWWANT056 - Northern Pacific steam locomotive 2258 at Allentown, Washington, circa 1940.
- ItemWWANT057 - Northern Pacific steam locomotive 2608 at Allentown, Washington, in July 1940.
- ItemWWANT058 - Northern Pacific steam locomotive 2184 at Allentown, Washington, circa 1940.
- ItemWWANT059 - Northern Pacific steam locomotive 252 at Allentown, Washington, circa 1935.
- ItemWWANT060 - Northern Pacific steam locomotive 2260 at Allentown, Washington, circa 1941.
- 214 more...