Union Pacific type GP9 297 at depot track at Butte with Union Pacific "Butte Special" passenger train in 1964. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Two Northern Pacific GP-9 diesel locomotives with a local freight led by 211 on a branchline in Montana. GJ Werkema collection. Other subject classes: freight train, diesel locomotive

Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, led by new F9 diesel locomotive number 6700, near Bozeman, Montana, on June 7, 1955. John Hutching, conductor; Charlie Graves, engineer. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, diesel locomotive

Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, along Yellowstone River at Elton Bluffs, Montana, circa 1955. Image light-struck. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, diesel locomotive, river

Northern Pacific passenger train number 26, the eastbound North Coast Limited, led by diesel locomotive number 6513, along the Yellowstone River at Elton Bluffs, Montana, circa 1954. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, diesel locomotive, river

Northern Pacific passenger train number 26, the eastbound Vista-Dome North Coast Limited, at Belgrade, Montana, behind three-unit diesel locomotive led by unit 6505A, in June 1955. Conductor Larson, engineer Norris. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, diesel locomotive

Northern Pacific type GP9 211 and former Northern Pacific steam locomotive tender being used as water car at Butte, Montana in 1964. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel, Car-Water.

Northern Pacific passenger train number 25, the westbound North Coast Limited departing Livingston, Montana, led by diesel locomotive number 6504, circa 1953. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, diesel locomotive

Northern Pacific passenger train number 25, the westbound North Coast Limited, at Laurel , Montana, on May 21, 1954, led by diesel locomotive number 6506 in new Raymond Loewy colors, train in mixed new and old colors. Image light-struck. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, diesel locomotive

Northern Pacific passenger train number 26, the eastbound North Coast Limited, led by diesel locomotive 6511, at Laurel , Montana, in September 1953. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, diesel locomotive