Union Pacific Railroad steam locomotive number 3224 at Bonneville, Oregon on June 18, 1939. UP 3224 with a passenger special on a Bonneville Dam Trip in 1939. 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.

Unidentified three-truck, Lima Shay steam locomotive number 1 parked in Portland, Oregon, in 1967. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, geared locomotive, logging locomotive.

View of the Oregon Pony steam locomotive on display in front of Portland Union Station in 1962. Photograph by Alden Raney. Other subject classes: Locomotive-Steam.

SP&S, Northern Pacific and Northern Pacific Terminal Company steam locomotives at Hoyt Street roundhouse facilities in Portland, Oregon on October 26, 1919, from the Oregon Historical Society Collection.

SP&S 4-6-0 steam locomotives Number 161, Class D-7, and 151, Class D-2, disembarking Army troops from passenger trains at Columbia Beach, Oregon, June 1927.

SP&S 4-6-0 steam locomotives Number 161, Class D-7, and 150, Class D-2, disembarking Army troops from passenger trains at Columbia Beach, Oregon, June 1927.

SP&S steam locomotive with a passenger train at Tunnel Number 2, 1916.