Northern Pacific passenger yard at Billings, Montana, circa 1950. Overhead view looking east at station yard, mainline, standing passenger cars, maintenance building, power plant. Photo by J.M. Fredrickson. Other Subject Classes: railroad yard, track, passenger car, maintenance building, power plant

Northern Pacific passenger yard at Billings, Montana, circa 1950. Overhead view looking east at station yard, platforms, maintenance building, mainline, station power plant, standing Chicago Burlington & Quincy passenger train, Northern Pacific steam switch engine, passenger cars on side track. Photo by J.M. Fredrickson. Other Subject Classes: railroad yard, station, track, passenger train, steam locomotive, passenger car

Northern Pacific passenger yard at Billings, Montana, circa 1950. Overhead view looking east at station yard, mainline, standing troop train led by Chicago Burlington & Quincy steam locomotive, standing passenger cars in siding, refrigerator cars being loaded with ice. Photo by J.M. Fredrickson. Other Subject Classes: railroad yard, track, passenger train, passenger car, refrigerator car

Northern Pacific mountain right-of-way at Borup, Washington, circa 1925. A passenger train makes its way over Stampede Pass. Photo by J.A. Turner. Other Subject Classes: mountain right-of-way, steam locomotive

Northern Pacific mountain right-of-way at Borup, Washington, circa 1925. The view shows just how demanding the countryside around Stampede Pass was for railroad builders. Photo by J.A. Turner. Other Subject Classes: mountain right-of-way, landscape

A Northern Pacific train makes its way up Stampede Pass as seen from Stampede, Washington, circa 1925. Mount Rainier is on the horizon. Photo by J.A. Turner. Other Subject Classes: mountain right-of-way, steam locomotive

Northern Pacific mainline at Tacoma, Washington, in May 1928. Joint facilities photo looking north on waterfront at mainline track, coal bunker, flour mill, warehouse. Photo by James Fisher, J.M. Fredrickson collection. Other Subject Classes: track, coal bunker, mill

Northern Pacific mainline at Tacoma, Washington, in May 1928. Joint facilities photo looking south on waterfront at mainline track, flour mill, boxcars awaiting loading. Photo by James Fisher, J.M. Fredrickson collection.. Other Subject Classes: track, mill, freight car

Northern Pacific mainline at Stampede Pass, Washington Territory, in 1887. Summit of switchback at Lizard Lake in forested area. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: tracks, switchback, mountains

Northern Pacific mainline at Stampede Pass, Washington Territory, in 1887. Three levels of track at summit of switchback, frame section house. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: track, switchback, section house, mountains