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
- 150 more...
- ItemWWANT183 - Northern Pacific steam locomotive 1266 at Seattle, Washington, in 1925.
- ItemWWANT184 - Northern Pacific steam locomotive 1266 at Seattle, Washington, circa 1925.
- ItemWWANT185 - Northern Pacific steam locomotive 1357 at Auburn, Washington, circa 1925.
- ItemWWANT186 - Northern Pacific steam locomotive 1384 at Seattle, Washington, in 1925.
- ItemWWANT187 - Northern Pacific steam locomotive 1384 at Kent, Washington, circa 1925.
- ItemWWANT188 - Northern Pacific steam locomotive 1384 at Auburn, Washington, circa 1925.
- ItemWWANT189 - Northern Pacific steam locomotive 1384 at Fremont, Washington, circa 1925.
- ItemWWANT190 - Northern Pacific steam locomotive in Auburn, Washington, circa 1935.
- ItemWWANT191 - Northern Pacific steam locomotive 1381 at Renton, Washington, in 1950.
- 109 more...