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
- 205 more...
- ItemWWANT241 - Northern Pacific steam locomotive 2109 at Seattle, Washington, circa 1925.
- ItemWWANT242 - Northern Pacific steam locomotive 2109 at Argo, Washington, circa 1925.
- ItemWWANT243 - Northern Pacific steam locomotive 2109 at Auburn, Washington, circa 1925.
- ItemWWANT244 - Northern Pacific steam locomotive 2160 at Seattle, Washington, in August 1925.
- ItemWWANT245 - Northern Pacific steam locomotive 2209 at Argo, Washington, in 1924.
- ItemWWANT246 - Northern Pacific steam locomotive 2216 at Seattle, Washington, in 1924.
- ItemWWANT247 - Northern Pacific steam locomotive 2246 at Seattle, Washington, circa 1925.
- ItemWWANT248 - A Northern Pacific steam locomotive at Seattle, Washington, circa 1935.
- ItemWWANT249 - Northern Pacific steam locomotive 2246 at Seattle, Washington, circa 1925.
- 54 more...