Great Northern Railway Western Star no 27 at Summit, Montana in 1967.

Great Northern Railway Train 78 with engine 3017 in a snowshed on up grade west of Summit, Montana in 1969.

Great Northern Railway Train 78 second section with F-unit no 460A helper engine at Summit, Montana in 1967.

Great Northern Railway Train 78 with helpers at rear of train near Summit, Montana in 1969.

Great Northern Railway Train 78 with helpers being cut off at Summit, Montana in 1969.

Great Northern Railway Train 78 approaching signal bridge at Summit, Montana in 1969.

Great Northern Railway Train 78 with leading engine 3017 going around the last curve before cresting at Marias Pass, Montana in 1969.

Great Northern Railway Train 78 with 4 GP-9 helpers at signal bridge, Summit, Montana in 1969.

Great Northern Railway Train 492 second section at Summit, Montana in 1968. Helper engines on second section of freight Train Number 492 at summit of Marias Pass in snow scene.

Great Northern Railway 728 at Summit, Montana. The locomotive is a General Motors Electro Motive Division Model GP-9. Other subject classes: Locomotive, GP-9

Great Northern Railway 715 at Summit, Montana. The locomotive is a General Motors Electro Motive Division Model GP-9. Other subject classes: Locomotive, GP-9

Great Northern Railway 693 at Summit, Montana. The locomotive is a General Motors Electro Motive Division Model GP9. Other subject classes: Locomotive, GP-9

Great Northern Railway 505 at Summit, Montana in 1947. Train 2 at Summit, Montana with E-7's. Other subject classes: E-7 , Locomotive

Great Northern Railway 362-A at Summit, Montana. The locomotive is a General Motors Electro Motive Division Model F3A; renumbered from 375-C in 1950. Other subject classes: Locomotive, P-3-7-AB

Great Northern Railway 2522 at Summit, Montana in 1968. Train 28, Western Star, with General Motors Electro Motive Division F3A number 357A in snow scene at Summit, Montana. Other subject classes: U25B , Locomotive

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

Great Northern Diesel Locomotive 362A at Summit, Montana, May 1967, simplified orange/green paint scheme. Other subject classes: Locomotive

Great Northern Diesel Locomotive 361A at Summit, Montana, undated, diesel locomotive number 361A, leading Train 31 (copy from magazine). Other subject classes: Passenger train

Northern Pacific Electro-Motive Division Type FP7A numbered as Burlington Northern 9826, Northern Pacific Type FP7B as Burlington Northern 9865, and Northern Pacific Type FP7A as Burlington Northern 9878 at Summit, Montana on Train 31, May 24, 1971.

Great Northern Electro-Motive Division Type SD45Fs numbered as Burlington Northern 6612 and 6607 at Summit, Montana, April 9, 1971.

Chicago, Burlington and Quincy Electro-Motive Division Type GP35 numbered as Burlington Northern 2536, Northern Pacific Type GP9 as Burlington Northern 1747, Great Northern Type GP7 as Burlington Northern 1530, and Great Northern Type GP9 as Burlington Northern 1770 at Summit, Montana, April 9, 1971.

Chicago, Burlington and Quincy Electro-Motive Division Type GP35 numbered as Burlington Northern 2536, Northern Pacific Type GP9 as Burlington Northern 1747, Great Northern Type GP7 as Burlington Northern 1530, and Great Northern Type GP9 as Burlington Northern 1770 at Summit, Montana, April 9, 1971.

Great Northern Electro-Motive Division Type GP9s numbered as Burlington Northern 1823, 1804, 1803, and 1795 act as helpers behind Great Northern caboose X77 at Summit, Montana, April 9, 1971.