Aerial view of south Seattle, Washington in 1927. Looking northwest over Duwamish flood plain, Georgetown truck gardens, distant railroad mainlines of Northern Pacific/Great Northern, Pacific Coast/Chicago Milwaukee St. Paul and Pacific Railroad, Union Pacific. Other Subject Classes: landscape, railroad mainline.

A Northern Pacific passenger train near Seattle, Washington, circa 1935. The locomotive is a Q-5 Pacific. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

A Northern Pacific steam locomotive smokes up the sky at the head of passenger train near Seattle, Washington, circa 1935. The 4-6-2 Pacific was a mainstay of passenger service. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger 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 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 Holland America Westours full-dome passenger car is switched by Burlington Northern locomotive 385 at West Seattle, Washington in 1986. Photo by J.M. Fredrickson. Other Subject Classes: passenger car, diesel locomotive