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
- 174 more...
- ItemWWANT207 - Northern Pacific steam locomotive 1678 at Auburn, Washington, circa 1925.
- ItemWWANT208 - Northern Pacific steam locomotive 1672 at Black River, Washington, in 1938.
- ItemWWANT210 - Northern Pacific steam locomotive 1679 at Seattle, Washington, in 1925.
- ItemWWANT211 - Northern Pacific steam locomotive 1679 at Seattle, Washington, in 1925.
- ItemWWANT212 - Northern Pacific steam locomotive 1682 in Seattle, Washington, circa 1925.
- ItemWWANT214 - Northern Pacific steam locomotive 1682 near Black River, Washington, circa 1925.
- ItemWWANT215 - Northern Pacific steam locomotive 1685 near Black River, Washington, circa 1940.
- ItemWWANT216 - Northern Pacific steam locomotive 1690 at Argo, Washington, in 1925.
- ItemWWANT217 - Northern Pacific steam locomotive 1694 in Renton, Washington in 1939.
- 85 more...