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
- 81 more...
- ItemWWANT095 - A Northern Pacific steam locomotive near Seattle, Washington, circa 1935.
- ItemWWANT096 - Northern Pacific steam locomotive 2263 near Seattle, Washington, circa 1941.
- ItemWWANT097 - Northern Pacific steam locomotive 2262 near Seattle, Washington, circa 1941.
- ItemWWANT098 - Northern Pacific steam locomotive 2263 at Kent, Washington, circa 1941.
- ItemWWANT099 - A Northern Pacific steam locomotive at Seattle, Washington, circa 1946.
- ItemWWANT107 - Great Northern steam locomotive 1017 at Seattle, Washington, in 1924.
- ItemWWANT109 - Northern Pacific steam locomotive 2258 at Borup Loop, Washington, circa 1940.
- ItemWWANT110 - A Northern Pacific freight train near Stampede, Washington, circa 1925.
- ItemWWANT118 - Northern Pacific steam locomotive 1599 at Borup, Washington, circa 1925.
- 178 more...