Great Northern depot at Summit, Montana, undated. Photograph by Bob Bye, from the Norm Keyes Collection.

Great Northern depot at Summit, Montana, undated. Photograph by Norm Keyes, from the Norm Keyes Collection.

Great Northern depot at Summit, Montana, undated. Distant view, photograph by Stan Townsend, from the Norm Keyes Collection.

Great Northern depot at Summit, Montana, undated. Photograph by Robert Johnston, from the Norm Keyes Collection.

Great Northern depot at Summit, Montana, undated. Photograph by Fleisher, from the Norm Keyes Collection.

Great Northern depot at Summit, Montana, undated. Photograph by Robert Johnston, from the Norm Keyes Collection.

Great Northern Diesel Locomotive 361A at Summit, Montana, undated, diesel locomotive number 361A, leading Train 31 (copy from magazine). 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 402D at Summit, Montana, undated, photograph taken by Russell Porter of his painting. Other subject classes: Freight train

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