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

SP&S Baldwin VO-1000 diesel locomotives Number 30 & 31 in transit in Northern Pacific freight train at Livingston, Montana on December 4, 1940. Photo by Ron Nixon.

Spokane, Portland & Seattle Railway steam locomotive number 700 east of Helena, Montana, in October 2002. SP&S 700 climbs minor grade to Winston Hill east of Helena with the eastbound Montana Rockies Rail Tours excursion in October 2002. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Spokane, Portland & Seattle Railway steam locomotive number 700 at Thompson Falls, Montana, in October 2002. SP&S 700 leads the eastbound Montana Rockies Rail Tours excursion through Thompson Falls in October 2002. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Spokane, Portland & Seattle Railway steam locomotive number 700 at Spring Gulch, Montana, in October 2002. SP&S 700 approaches the east switch at Spring Gulch with the eastbound Montana Rockies Rail Tours excursion in October 2002. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Spokane, Portland & Seattle Railway steam locomotive number 700 at Spring Gulch, Montana, in October 2002. SP&S 700 approaches the east switch at Spring Gulch with the eastbound Montana Rockies Rail Tours excursion in October 2002. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Spokane, Portland & Seattle Railway steam locomotive number 700 at Paradise, Montana, in October 2002. SP&S 700 stages a run-by at Paradise for the passengers on the westbound Montana Rockies Rail Tours excursion in October 2002. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Spokane, Portland & Seattle Railway steam locomotive number 700 at Paradise, Montana, in October 2002. SP&S 700 makes a station stop at Paradise with the eastbound Montana Rockies Rail Tours excursion to Billings, Montana, in October 2002. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Spokane, Portland & Seattle Railway steam locomotive number 700 at Paradise, Montana, in October 2002. SP&S 700 backs into position for a run-by at Paradise for the passengers on the westbound Montana Rockies Rail Tours excursion in October 2002. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Spokane, Portland & Seattle Railway steam locomotive number 700 at Paradise, Montana, in October 2002. SP&S 700 makes a station stop at Paradise with the eastbound Montana Rockies Rail Tours excursion to Billings, Montana, in October 2002. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Spokane, Portland & Seattle Railway steam locomotive number 700 at Noxon, Montana, in October 2002. SP&S 700 leads the eastbound Montana Rockies Rail Tours excursion across the bridge at Noxon in October 2002. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train, river.

Spokane, Portland & Seattle Railway steam locomotive number 700 arriving Livingston, Montana, in October 2002. SP&S 700 stages a run-by at Livingston for the passengers of the westbound Montana Rockies Rail Tours excursion in October 2002. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Spokane, Portland & Seattle Railway steam locomotive number 700 at Eddy, Montana, in October 2002. SP&S 700 leads the eastbound Montana Rockies Rail Tours excursion past the east switch at Eddy in October 2002. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train, river.

Spokane, Portland & Seattle Railway steam locomotive number 700 at Bozeman, Montana, in October 2002. SP&S 700 clears water from its cylinders as it starts from Bozeman on its way to Missoula, Montana, with the westbound Montana Rockies Rail Tours excursion in October 2002. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Spokane, Portland, and Seattle Railway Caboose 861 (Burlington Northern when photographed) at Whitefish, Montana, May 16, 1970.

Spokane, Portland, and Seattle Railway 301 (Burlington Northern when photographed), an American Locomotive Company (ALCO) Type C424 at Whitefish, Montana, May 17, 1970.

Somers Lumber Company 0-4-0 steam saddle tank locomotive number S-1 at Sommers, Montana, in June 1961. Photo by Ron V. Nixon, J.M. Fredrickson Collection. Other Subject Classes: steam locomotive.

Somers Lumber Company 0-4-0 steam saddle tank locomotive number S-1 at Sommers, Montana, in June 1961. Photo by Ron V. Nixon, J.M. Fredrickson Collection. Other Subject Classes: steam locomotive.

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, west of Livingston, Montana, on June 8, 1955. Looking south from vista-dome toward Absaroka Range, climbing grade between Livingston and Muir. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, west of Livingston, Montana, on June 8, 1955. Looking south from vista-dome toward Absaroka Range, climbing grade between Livingston and Muir. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, west of Livingston, Montana, on June 8, 1955. Looking south from vista-dome toward Absaroka Range, climbing grade between Livingston and Muir. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, west of Livingston, Montana, on June 8, 1955. Looking south from vista-dome toward Absaroka Range, climbing grade between Livingston and Muir. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, west of Livingston, Montana, on June 8, 1955. Looking south from vista-dome toward Absaroka Range, climbing grade between Livingston and Muir. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, climbing Rocky Mountains toward Homestake Pass near Welch, Montana, on June 8, 1955, with a view from rear vista-dome looking toward front of train. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, climbing Rocky Mountains toward Homestake Pass near Welch, Montana, on June 8, 1955, with a view from the dome looking along train. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, climbing Montana Rockies toward Homestake Pass, on June 8, 1955, with a view from the dome looking toward rear of train just west of Spire Rock siding, east of Bridge 51, Milepost 50.8. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, climbing Montana Rockies toward Homestake Pass on June 8, 1955, with a view from the dome looking toward rear of train just west of Spire Rock siding, east of Bridge 51, Milepost 50.8. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, climbing Montana Rockies toward Homestake Pass on June 8, 1955, with a view from the dome looking toward rear of train on Spire Rock viaduct, Bridge 51, Milepost 50.8. Spire Rock in distance. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, bridge, mountains