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

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

The town of Burke, Idaho, which was a tight fit in the narrow canyon. Located at Milepost 6.9.

The track side of the Butte, Montana depot in 1995. Located at Milepost 71, photograph by Bob Foley.

A westbound passenger train making a stop at the Butte, Montana depot. Located at Milepost 71.

The waiting room of the Butte, Montana depot Located at Milepost 71.