Plat Map of Northern Pacific facilities at Missoula, Montana, November 11, 1969, Sheet Number 2, Line Segment 716, showing the Missoula yard, depot, roundhouse.

Plat Map of Northern Pacific facilities at Missoula, Montana, September 23, 1915, Sheet Number 2, Line Segment 716, showing the Dakota Street spur.

Plat Map of Northern Pacific facilities at Missoula, Montana, September 23, 1915, Sheet Number 1, Line Segment 716, showing the Missoula yard, industry spurs.

Plat Map of Milwaukee Road facilities at Missoula, Montana, September 27, 1923, Drawing Number 31198, Sheet Number 1, showing the Milwaukee Road mainline.

Plat Map of Milwaukee Road facilities at Missoula, Montana, September 27, 1923, Drawing Number 31198, Sheet Number 2, showing the Milwaukee Road mainline.

Northern Pacific passenger train number 2, the Vista-Dome North Coast Limited, at the station in Missoula, Montana, with new vista-dome cars, circa 1955. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, passenger car, passengers, passenger station

Northern Pacific steam locomotive 5144 at Missoula, Montana, in September 1953. Number 5144, a class Z-8 built by Alco-Schenectady in 1944, is parked at the engine facility. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 5140 at Missoula, Montana, on April 24, 1950. Number 5140 is a class Z-8 built by Alco-Schenectady in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 5140 at Missoula, Montana, in August 1943. Number 5140 is a class Z-8 built by Alco-Schenectady in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 5139 parked nex to the cinder pit at Missoula in Montana, circa 1953. Number 5139 is a class Z-8 built by Alco-Schenectady in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo