SP&S 2-8-2 steam locomotive Number 532, Class O-3, from the firemans side at Portland, Oregon on November 20, 1947. From the Witbeck Studio Collection.

SP&S 2-8-2 steam locomotive Number 531, Class O-3, out of service at Vancouver, Washington.

SP&S 2-8-2 steam locomotive Number 531, Class O-3, at Vancouver, Washington with other out of service steam locomotives.

SP&S 2-8-2 steam locomotive Number 531, Class O-3, at Vancouver, Washington on September 9, 1953. Photo by Don Roberts.

SP&S 2-8-2 steam locomotive Number 531, Class O-3, at Vancouver, Washington in April 1953. Photo by Stan Styles.

SP&S 2-8-2 steam locomotive Number 531, Class O-3, at Portland, Oregon. Photo by Herbert Arey.

SP&S 2-8-2 steam locomotive Number 531, Class O-3, at Portland, Oregon. Photo by Herbert Arey.

SP&S 2-8-2 steam locomotive Number 531, Class O-3, at Portland, Oregon. This locomotive was formerly Northern Pacific Number 1704 and was built by Brooks Locomotive Works in March 1913.

SP&S 2-8-2 steam locomotive Number 531, Class O-3, at Portland, Oregon on May 30, 1937. Photo by Herbert L. Arey.

SP&S 2-8-2 steam locomotive Number 531, Class O-3, at Pasco, Washington in October 1952.