Great Northern Steam Locomotive Number 1327 at Butte, Montana, 1932.

Great Northern Steam Locomotive Number 1327 and water tank, formerly Butte, Anaconda & Pacific, Class F-12, at Butte, Montana, 1932.

Great Northern Steam Locomotive Number 1719 at Butte, Montana, 1947.

Great Northern Steam Locomotive Number 94 at Butte, Montana, 1922.

On board Northern Pacific passenger train number 4, the eastbound Alaskan, in the Rocky Mountains on August 19, 1949. Looking from rear of train forward to mail cars and steam locomotive, the train has been detoured off its normal route via Helena and is running via Butte and Homestake Pass. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, passenger car, steam locomotive, mountains

On board Northern Pacific passenger train number 4, the eastbound Alaskan, in the Rocky Mountains on August 19, 1949. Looking from rear of train forward to mail cars and steam locomotive, crossing viaduct, the train has been detoured off its normal route via Helena and is running via Butte and Homestake Pass. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, steam locomotive, bridge, mountains

Northern Pacific steam locomotive 1814 at Butte, Montana, on August 19, 1949. Number 1814 is a class W-3 built by Alco-Brooks in 1920. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 23 at Butte, Montana, on August 19, 1949. Number 23, a class Y-1 built by Schenectady in 1899, passes through the yard. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight yard

Northern Pacific steam locomotive 25 at Butte, Montana, on May 09, 1958. Number 25, a class Y-1 built by Schenectady in 1899, is being moved into place on its display track at Butte. Photo by Ron V. Nixon, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, display

Northern Pacific steam locomotive 25 at Butte, Montana, on May 09, 1958. Number 25, a class Y-1 built by Schenectady in 1899, is being moved into place on its display track at Butte. Photo by Ron V. Nixon, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, display