Northern Pacific diesel locomotive number 6000 in the engine facility at Mandan, North Dakota, on April 26, 1950. NP 6000 is an F-3 built by Electro Motive Division of General Motors Company in 1947, parked at the Mandan engine facility in 1950. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive,

A line up of new Northern Pacific diesel freight locomotives, class F7s 6007 and 6011, and F3 6000, at the engine terminal at Mandan, North Dakota, on April 26, 1950. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.