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 6707A (part of the Burlington Northern since March 1, 1970), an Electro-Motive Division Type F5A, and 6700B, a Type F5B on Train 30 at Missoula, Montana, May 17, 1970.

Northern Pacific 6707A (part of the Burlington Northern since March 1, 1970), an Electro-Motive Division Type F5A, and 6700B, a Type F5B on Train 30 at Missoula, Montana, May 17, 1970.

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.

Great Northern Diesel Locomotive 98 at Missoula, Montana on May 16, 1976. The photograph shows an Electro-Motive Division Type SW-8, Great Northern Class SW-2. The locomotive is painted in the simplified green and orange scheme. Photograph by Larry Zeutschel. Other subject classes: Locomotive-Diesel