Union Pacific Railroad steam locomotive number 7861 at Union Station in Tacoma, Washington on February 11, 1935. UP 7861 on train 457 running from Seattle to Portland after the UP started using bigger locomotives in 1935. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, passenger train.

Union Pacific Railroad steam locomotive number 7864 at Tacoma, Washington on December 05, 1935. UP 7864 at Tacoma Union Station in 1935. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, passenger train.

Union Pacific Railroad steam locomotive number 7864 at Tacoma, Washington on April 16, 1936. UP 7864 arriving Tacoma with train 457 in 1936. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, passenger train.

Union Pacific Railroad steam locomotive number 7866 at Tacoma, Washington, in 1940. UP 7866 with a westbound extra freight at Sixth Avenue station in Tacoma in 1940. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight train.

Union Pacific Railroad steam locomotive number 7868 at Tacoma, Washington on January 22, 1936. UP 7868 with a 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 7869 at Tacoma, Washington on February 10, 1936. UP 7869 with a 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 9039, undated. UP 9039, a 4-12-2 on a freight at track speed. Photo by Marge Wilson, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, freight train.

United States Navy 0-4-0T steam locomotive number 6992 parked at Pasco, Washington, on September 24, 1948. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, switching locomotive.

Unknown Climax steam locomotive with log train, circa 1930. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, logging locomotive, railroad crew.

Unknown Shay steam locomotive, circa 1946. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive