Northern Pacific Class Q-6 steam locomotive number 2264 passes under the Airport Avenue overpass at Argo in Seattle, Washington, circa 1940. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 steam locomotive number 2264 huals a passenger train at track speed south of Georgetown in Seattle, Washington, circa 1940. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 steam locomotive number 2264 huals a northbound passenger train at track speed south of Georgetown in Seattle, Washington, circa 1940. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 steam locomotive number 2263 emerges from the tunnel at Ostrander, Washington, circa 1940. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 steam locomotive number 2263 huals a passenger train at track speed at Kent, Washington, circa 1940. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 Pacific-type steam locomotive number 2262 leads an East Auburn connection passenger train across the Foss Waterway drawbridge trestle, bridge 39, approaching 15th Street, in Tacoma, Washington, circa 1950. Photo by Al Harris, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, passenger

Northern Pacific Class Q-6 steam locomotive number 2262 awaits is next assignment at the Seattle, Washington, roundhouse, circa 1928. Photo by J.A. Turner. Other Subject Classes: steam locomotive, locomotive facility

Northern Pacific Class Q-6 steam locomotive number 2262 hauls a passenger train passed the Milwaukee Road tower at Black River, Washington, circa 1928. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 steam locomotive number 2262 guides a passenger train through Argo in Seattle, Washington, circa 1940. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific steam locomotive number 2261, Class Q-6 Pacific-type, switches passenger cars at Union Station in Tacoma, Washington, circa 1950. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, passenger cars, passenger station, railroad yard