Railroad mainlines at south Seattle, Washington in 1927.

Pacific Coast Railroad railroad track at Argo, Washington, circa 1940.

Northern Pacific Class Q-6 steam locomotive number 2264 leads a northbound passenger train 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 leads a northbound passenger train 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 leads a northbound passenger train at Argo in Seattle, Washington, on June 22, 1926. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific Class Q-6 steam locomotive number 2264 leads a northbound passenger train at Argo in Seattle, Washington, on May 17, 1924. 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 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 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