Northern Pacific Class Q-6 steam locomotive number 2260 is ready to leave Argo in Seattle, Washington, with a passenger train, circa 1935. Photo by J.A. Turner. Other Subject Classes: steam locomotive,

Northern Pacific Class Q-6 steam locomotive number 2259 leads Train number 2 eastbound at Argo Crossing in Seattle, Washington, circa 1935. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 steam locomotive number 2259 leads Train number 2 eastbound at Ravensdale, Washington, on July 28, 1945. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 steam locomotive number 2259 waits for a dispatcher's clearance to proceed with its passenger train southbound from Argo, Washington, circa 1935. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 steam locomotive number 2259 leads a local passenger train at Argo in Seattle, Washington, circa 1935. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 steam locomotive number 2258 awaits its next assignment at Seattle, Washington, on July 24, 1925. Photo by J.A. Turner. Other Subject Classes: steam locomotive,

Northern Pacific Class Q-6 steam locomotive number 2258 clears its cylindar cocks as it leads a daylight passenger train southbound from King Street Station in Seattle, Washington, circa 1935. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 steam locomotive number 2254 waits for the dispatcher's clearance of its passenger train to proceed southbound from Argo in Seattle, Washington, circa 1935. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 Pacific-type steam locomotive number 2247 leads a passenger train at an unknown location, circa 1940. Distant view. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train

Northern Pacific steam locomotive number 2223 leads a passenger train at St. Paul, Minnesota, circa 1935. Class Q-4 Pacific-type was built by Baldwin Locomotive Works in 1910, passes Great Northern roundhouse near St. Paul Union Station. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, passenger train, roundhouse, railroad yard