A Milwaukee Road boxcab locomotive set along the Yakima River in Washington, undated. A boxcab locomotive set leads a freight train along the Yakima River.

A Northern Pacific steam locomotive leads a freight train at Seattle, Washington, circa 1946. The train is passing Interbay and will soon cross over the ship canal to Fremont, the University District and on around the north end of Lake Washington to Woodinville. Photo by J.A. Turner. Other Subject Classes: steam locomotive , freight train

A Northern Pacific steam locomotive leads an eastbound freight train out of Tunnel number 4 at Stampede, Washington, circa 1925. The train consist is almost exclusively gondolas. Photo by J.A. Turner. Other Subject Classes: steam locomotive , freight train

A Northern Pacific steam locomotive leads a freight train in the Yakima River Canyon near Ellensburg, Washington, on July 23, 1937. The route follows the Yakima River between Ellensburg and Yakima, Washington. Photo by J.A. Turner. Other Subject Classes: steam locomotive , freight train

A Northern Pacific freight train with a wood caboose head into the 11th subdivison Lake Washington Belt Line, circa 1941. A crewman grabs train orders as the train rolls through Black River, Washington. Photo by J.A. Turner. Other Subject Classes: freight train, wood caboose

Railroad workers confer at the end of a Northern Pacific freight train with a wood caboose at Black River, Washington, circa 1941. Note the man perched on top of the refrigerator car. Photo by J.A. Turner. Other Subject Classes: freight train, wood caboose

Northern Pacific freight train near Stampede, Washington, circa 1925. A Class Z-3 helper brings up the rear of the long express freight on the Stampede Pass line. Photo by J.A. Turner. Other Subject Classes: steam locomotive , freight train

A Northern Pacific steam locomotive leads a passenger train at Seattle, Washington, circa 1935. The train is passing one of the Northern Pacific's iconic semaphore signals at left. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

A Northern Pacific sleeping car in the Puget Sound Railway Museum yard at North Bend, Washington, on September 7, 1966. Photo by GJ Werkema. Other subject classes: passenger car, sleeper

A Northern Pacific steam locomotive leads a two car freight train through Black River, Washington, circa 1941. It’s a minimal train--locomotive, gondola and caboose. Photo by J.A. Turner. Other Subject Classes: steam locomotive, freight train