Union Pacific Railroad steam locomotive number 3203 at Tacoma, Washington on February 15, 1936. UP 3203 with passenger train at Tacoma in 1936. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, passenger train.

Union Pacific Railroad steam locomotive number 3203 in a park at Portland, Oregon, undated. UP 3203 parked in a park at Portland. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive.

Union Pacific Railroad steam locomotive number 3181 at Tacoma, Washington on December 13, 1935. UP 3181 With a passenger train at Tacoma 1935. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Unidentified Shay steam locomotive, circa 1945, at an unknown location. Photo by Herman Hunt, J.M. Fredrickson Collection. Other Subject Classes: steam locomotive.

Unidentified three-truck Shay steam locomotive, circa 1945, likely in western Washington. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, geared locomotive, logging locomotive.

Unidentified 2-4-2T steam locomotive, with its crew, circa 1925, in western Washington. Photo by Max King, J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, logging locomotive, railroad crew

Unidentified 0-4-0T steam locomotive with a water tank mounted on a four-wheel flatcar, circa 1910, likely in western Washington. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, flatcar.

Unidentified steam locomotive crosses a bridge with a log train, likely a short line in western Washington, circa 1910. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, logging locomotive, bridge.

Unidentified Porter 0-4-0T steam locomotive number 7, parked, out of service, at an unknown location, circa 1950. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, logging locomotive.

Unidentified steam locomotive number 5, with crew, likely a short line in western Washington, circa 1925. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, logging locomotive, railroad crew.