Railroad Archives Online
- ФондовиD0011 - James M. Fredrickson Collection
- Серија004 - Northern Pacific Railroad Company
- Подсерија014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 011 - Railroad cars self-propelled
- ЈединицаJMF01-03582.0 - Northern Pacific passenger train number 422 at South Tacoma, Washington, circa 1954.
- ЈединицаJMF01-03582.1 - Northern Pacific gas-electric motor car number B-3 at South Tacoma, Washington, in 1956.
- ЈединицаJMF01-03582.2 - Northern Pacific gas-electric motor car number B-3 at South Tacoma, Washington, in 1956.
- ЈединицаJMF01-03582.3 - Northern Pacific gas-electric motor car number B-12 at South Tacoma, Washington, in 1956.
- ЈединицаJMF01-03583.0 - Northern Pacific gas-electric motor car number B-8 at Gate, Washington, circa 1940.
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