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 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