Northern Pacific passenger train number 2, the eastbound Mainstreeter, stopped at the station at Missoula, Montana, circa 1953. Powered by a three-unit diesel locomotive led by number 6502, a 1500-hp model F7 built in 1949 by Electro-Motive Division. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, passenger station, diesel locomotive

Northern Pacific passenger train number 2, the eastbound Mainstreeter, stands at the station at Missoula, Montana, in July 1968. Laborer refuels the two diesel locomotive units, baggage and mail are transferred at the baggage car, and a few passengers board the coaches. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, passenger station, diesel locomotive, railroad crew

Northern Pacific Number 6703A, an Electro-Motive Division (EMD) Type F9A, at Missoula, Montana, June 1969.

Northern Pacific diesel locomotive number 6506 in the engine facility at Missoula, Montana, on August 20, 1949. NP 6506 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 5403 in the engine facility at Missoula, Montana, on April 24, 1950. NP 5403 is an FT built by Electro Motive Division of General Motors Company in 1944. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific 2524, a General Electric U25C, leads SD45s 3608 and 3621 and an eastbound extra freight by the depot at Missoula, Montana, in July 1968. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, passenger depot.

Northern Pacific 2524, a General Electric U25C, leads SD45s 3608 and 3621 and an eastbound extra freight out of Missoula, Montana, in July 1968. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, passenger depot.

Chicago, Burlington and Quincy Railroad diesel locomotive 883 at the round turntable in Missoula, Montana, on September 02, 1972. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Burlington Northern diesel locomotive 703, formerly Northern Pacific 6012C/6001C, at Missoula, Montana, on September 02, 1972. Number 703 is an F3B built by General Motors Electro Motive Division (EMD), builder's number 3877. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6566 at Missoula, Montana, on September 02, 1972. Number 6566 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 5794-24. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.