Northern Pacific passenger train number 3, the westbound Alaskan, at Scoria, North Dakota, on May 25, 1950. Diesel passenger locomotive number 6508, built by Electro-Motive Division in 1949, leads a railway post office car, three mail cars, coach, and cafe-coach past twin semaphore signals. Other Subject Classes: passenger train, diesel locomotive, passenger car, semaphore signal

Northern Pacific 6011, a class F7, leads a westbound extra freight train on the mainline near Scoria, North Dakota, on May 25, 1950. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Northern Pacific diesel locomotive number 6008 at Scoria, North Dakota, on April 25, 1950. NP 6008 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,