Pacific Coast Railroad yard at Seattle, Washington, on August 16, 1949. Yard tracks looking south, steam locomotive number 15 departing south with empty gondolas, passing beneath Holgate St. foot bridge. Photo by Tom Kroutz. Other Subject Classes: railroad yards, steam locomotives, freight cars.

Pacific Coast Railroad yard tracks at Seattle, Washington, on March 31, 1951. Tracks leading to dock, coal bunker, servicing facilities with steam locomotive. Photo by Tom Kroutz. Other Subject Classes: miscellanea, railroad servicing facilities, steam locomotives.

Pacific Coast Railroad/Chicago Milwaukee St. Paul and Pacific Railroad yard at Black River Junction, Washington, in 1944. Looking east at yard, water tank, Chicago Milwaukee St. Paul and Pacific Railroad trolley wire. Photo by Harold Hill. Other Subject Classes: railroad yards, railroad servicing facilities, railroad electrification.

Pennsylvania Railroad Interlocking control tower at Pittsburg, Pennsylvania, on July 13, 1964. Photo by J.M. Fredrickson. Other Subject Classes: control tower

Portland Terminal Railroad tie tamper at Portland near Union Station in 1984. Photograph by Alden Raney. Other subject classes: Track-Maintenance.

Portland Terminal Railroad tie tamper and track crew at Portland near Union Station in 1984. Photograph by Alden Raney. Other subject classes: Track-Maintenance.

Portland Terminal Railroad tie tamper and track crew at Portland near Union Station in 1984. Photograph by Alden Raney. Other subject classes: Track-Maintenance.

Puget Sound Traction, Power and Light Company Yard, Seattle, Washington, circa 1915. View of 9 streetcars on upper (5th Avenue North) level during snowstorm. Other subject categories: Carbarn scenes