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
- 26 more...
- ItemWWANT030 - Northern Pacific steam locomotive 227 at Seattle, Washington, circa 1925.
- ItemWWANT031 - Northern Pacific steam locomotive 2198 at Seattle, Washington, in 1941.
- ItemWWANT032 - Northern Pacific steam locomotive 2111 at Argo, Washington, in 1924.
- ItemWWANT033 - Northern Pacific steam locomotive 2198 at Seattle, Washington, circa 1940.
- ItemWWANT034 - Northern Pacific steam locomotive 2194 at Seattle, Washington, circa 1940.
- ItemWWANT035 - Northern Pacific steam locomotive 2198 at Seattle, Washington, circa 1940.
- ItemWWANT036 - Northern Pacific steam locomotive 2170 at Seattle, Washington, circa 1935.
- ItemWWANT037 - Northern Pacific steam locomotive 2250 at Seattle, Washington, in 1941.
- ItemWWANT038 - Northern Pacific steam locomotive 2258 at Seattle, Washington, circa 1940.
- 233 more...