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
- 131 more...
- ItemWWANT163 - Northern Pacific steam locomotive 1098 at Seattle, Washington, circa 1940.
- ItemWWANT164 - Northern Pacific steam locomotive 1097 at Seattle, Washington, circa 1941.
- ItemWWANT165 - Northern Pacific steam locomotive 1098 at Seattle, Washington, circa 1940.
- ItemWWANT167 - Northern Pacific steam locomotive 1098 at Seattle, Washington, circa 1940.
- ItemWWANT168 - Northern Pacific steam locomotive 1103 at Seattle, Washington, 1925.
- ItemWWANT169 - Northern Pacific steam locomotive 1108 at Seattle, Washington, circa 1925.
- ItemWWANT170 - Northern Pacific steam locomotive 1108 at Seattle, Washington, circa 1925.
- ItemWWANT171 - Northern Pacific steam locomotive 1123 at Seattle, Washington, in 1949.
- ItemWWANT172 - Northern Pacific steam locomotive 1123 at Seattle, Washington, in 1949.
- 128 more...