Nevada County Narrow Gauge Railroad Museum O'Malley Spur Switch at Nevada City, California, undated. Photograph by Wade Stevenson.

New Haven Railroad interlocking tower at Old Saybrook, Connecticut, on January 28, 1977. Railroad interlocking tower at Old Saybrook Connecticut in 1977 Photo by J.M. Fredrickson. Other Subject Classes: interlocking tower

Northern Pacific facilities at DuPont, Washington, in circa 1927. Joint facilities photo of mainline, siding switch, wood-frame with unidentified object--spark arrestor to put on stack of locomotive while switching in hazardous area?--over track. Photo by James Fisher, J.M. Fredrickson collection. Other Subject Classes: track, switch, structure

Northern Pacific freight yard at Auburn, Washington, circa 1925. Looking north in yard with coal dock, distant roundhouse facilities, standing freight cars, mainline at left. Copy of Postcard. J.M. Fredrickson collection. Other Subject Classes: railroad yard, coal dock, freight car

Northern Pacific freight yard at Auburn, Washington, on August 10, 1967. Looking north in yard, switch tender sitting during lull. Photo by J.M. Fredrickson. Other Subject Classes: railroad yard, railroad employee

Northern Pacific freight yard at Auburn, Washington, on August 10, 1967. Looking north at freight trains meeting. Photo by J.M. Fredrickson. Other Subject Classes: railroad yard, freight train

Northern Pacific freight yard at Tacoma, Washington, circa 1920. East end of yard with semaphore signals, Seattle-Tacoma Interurban trestle in distance. J.M. Fredrickson collection.. Other Subject Classes: railroad yard, signal, bridge

Northern Pacific freight yard on waterfront at Tacoma, Washington, circa 1925. Joint Facilities view of yard on filled-in former dock area, standing freight cars. Photo by James Fisher, J.M. Fredrickson collection. Other Subject Classes: railroad yard, freight car

Northern Pacific freight yard on waterfront at Tacoma, Washington, circa 1935. Yard track with freight and outfit cars, warehouses, pile driver. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: railroad yard, freight car, outfit car, warehouse, pile driver

Northern Pacific freight yard at Stacy Street in Seattle, Washington, circa 1925. The Sears building is at right, the Smith Tower at far left. Photo by J.A. Turner. Other Subject Classes: freight yard, steam locomotive

Northern Pacific freight yard at Arlington, Washington looking south E 3rd Street at north end of yard; coaling tower on left in distance; main track third from right; box car on the spur for Washington Co-op Farmers Association and Murphy Feed & Seed Company. Other subject categories: Yard-Freight, Industrial Buildings, Structure, Coal Tower

Northern Pacific grade crossing at McKenna, Washington, circa 1927. Joint facilities photo of road crossing with mainline, cattle guards, wig-wag signal. Photo by James Fisher, J.M. Fredrickson collection.. Other Subject Classes: grade crossing, track, signal

Northern Pacific Half Moon yard at Tacoma, Washington, in September 1965. Looking north at yard, mainline, freight cars, wharves, distant overpass. Photo by J.M. Fredrickson . Other Subject Classes: railroad yard, track, freight car, wharf, bridge

Northern Pacific Half-Moon yard at Tacoma, Washington, circa 1880. Looking south across NP track yet to be filled in, Commencement Bay tideflats in distance. J.M. Fredrickson collection. Other Subject Classes: railroad yard, harbor

Northern Pacific Half-Moon yard at Tacoma, Washington, circa 1889. Looking south across yard with lines of freight cars, General Office building on hill, Commencement Bay tideflats in distance. J.M. Fredrickson collection. Other Subject Classes: railroad yard, freight car, office building, harbor

Northern Pacific loading ramp in Kalama, Washington, circa 1920. Ferry loading ramp with waiting freight cars, side track, moored lumber schooner, passenger train passing on distant mainline. J.M. Fredrickson collection. Other Subject Classes: loading ramp, freight car, track, sailing ship

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

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 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

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. 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 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 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, 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 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, 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, 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, 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, standing passenger cars. Photo by J.M. Fredrickson. Other Subject Classes: railroad yard, track, baggage cart, passenger car