Great Northern Freight Train Number 1325 eastbound, pulled by EMD GP35 Number 3023, a GP30, an F unit, and another GP30, entering a snowshed at Marias Pass, Montana. A David Emerson photo taken in August 1966.

Great Northern Diesel Locomotive at Marias Pass, Montana, 1956, A-B-B-A set leading Train 32 (the "Empire Builder"). Other subject classes: Passenger train

Great Northern Diesel Locomotive at Marias Pass, Montana, 1956, A-B-B-A set leading Train 32 (the "Empire Builder"). Other subject classes: Passenger train

Great Northern Railway 2520 at Marias Pass, Montana. The locomotive is a General Electric Model U25B. Other subject classes: Locomotive, U25B

Great Northern Railway 2523 at Marias Pass, Montana. The locomotive is a General Electric Model U25B. Other subject classes: Locomotive, U25B

Great Northern Railway Train 78 with rear helpers approaching snow shed in Marias Pass in 1969.

Great Northern Railway Lead engines of train 78 between snow sheds in Marias Pass in 1969.