Northern Pacific passenger train number 2, the eastbound North Coast Limited, stands at Mandan, North Dakota, on April 25, 1950. Laborers refuel and wash the windshield of diesel passenger locomotive number 6503, built by Electro-Motive Division in 1949. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, diesel locomotive, railroad crew, railroad yard

Northern Pacific diesel locomotive number 651 in the yard at Auburn, Washington, circa 1955. NP 651 is a VO 660 built by Baldwin in 1941. This unit was originally numbered 129 when delivered. The unit was leased to King Street Station in the late 1950s. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switcher locomotive

Northern Pacific diesel locomotive number 6009 in the yard at Mandan, North Dakota, on September 14, 1946. NP 6009 is an FT built by Electro Motive Division of General Motors Company in 1945. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 6009 in the yard at Mandan, North Dakota, on September 14, 1946. NP 6009 is an FT built by Electro Motive Division of General Motors Company in 1945. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 6007 in the engine facility at Mandan, North Dakota, on April 26, 1950. NP 6007 is an F-7 built by Electro Motive Division of General Motors Company in 1950. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive,

Northern Pacific diesel locomotive number 6004 in the engine facility at Mandan, North Dakota, on April 26, 1950. NP 6004 is an F-3 built by Electro Motive Division of General Motors Company in 1947. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive,

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.