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
- 119 more...
- ItemWWANT151 - Northern Pacific steam locomotive 916 at Seattle, Washington, circa 1925.
- ItemWWANT152 - Northern Pacific steam locomotive 916 at Seattle, Washington, in 1924.
- ItemWWANT153 - Northern Pacific steam locomotive 1050 at Seattle, Washington, in 1941.
- ItemWWANT154 - Northern Pacific steam locomotive 1050 at Seattle, Washington, in 1941.
- ItemWWANT155 - Northern Pacific steam locomotive 1053 in Washington, circa 1935.
- ItemWWANT156 - Northern Pacific steam locomotive 1080 at Seattle, Washington, in 1941.
- ItemWWANT157 - Northern Pacific steam locomotive 1080 at Seattle, Washington, circa 1925.
- ItemWWANT158 - Northern Pacific steam locomotive 1082 at Seattle, Washington, circa 1925.
- ItemWWANT159 - Northern Pacific steam locomotive 1082 at Seattle, Washington, in 1926.
- 140 more...