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
- 22 more...
- ItemWWANT025 - Northern Pacific steam locomotive 2610 at Seattle, Washington, circa 1946.
- ItemWWANT026 - Northern Pacific steam locomotive 2264 at Seattle, Washington, circa 1940.
- ItemWWANT027 - Northern Pacific steam locomotive 2264 at Seattle, Washington, circa 1940.
- ItemWWANT029 - Northern Pacific steam locomotive 2249 at Seattle, Washington, circa 1940.
- 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.
- 237 more...