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 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

Northern Pacific passenger yard at Billings, Montana, circa 1950. Overhead view looking east at station yard, platforms, baggage carts, mainline, station power plant. Photo by J.M. Fredrickson. Other Subject Classes: railroad yard, track, baggage cart

Northern Pacific passenger yard at Billings, Montana, circa 1950. Overhead view looking east at station yard, platforms, baggage carts, mainline, station power plant. Photo by J.M. Fredrickson. Other Subject Classes: railroad yard, track, baggage cart

Northern Pacific passenger yard at Billings, Montana, circa 1950. Overhead view of yard tracks, supply shed, baggage carts. Photo by J.M. Fredrickson. Other Subject Classes: railroad yard, baggage cart

Northern Pacific passenger yard at Billings, Montana, circa 1950. Overhead view looking east at station yard, platforms, baggage carts, mainline, standing passenger cars. Photo by J.M. Fredrickson. Other Subject Classes: railroad yard, track, baggage cart, passenger car

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