SP&S 2-8-2 steam locomotive Number 536, Class O-3, at Vancouver, Washington in September 1955. Photo by Stan Styles.

SP&S 2-8-2 steam locomotive Number 536, Class O-3, at Portland, Oregon on September 9, 1944. This locomotive was formerly Northern Pacific Number 1726 and was built by Brooks Locomotive Works in April 1913. Note the wartime blackout hood on the headlight. From the Witbeck Studio Collection.

SP&S 2-8-2 steam locomotive Number 535, Class O-3, does some switching near Stevenson, Washington on October 9, 1951. This locomotive was formerly Northern Pacific Number 1701 and was built by Brooks Locomotive Works in March 1913. Photo by John Labbe.

SP&S 2-8-2 steam locomotive Number 534, Class O-3, heads a freight out at an unknown location and date. This locomotive was formerly Northern Pacific Number 1747 and was built by Brooks Locomotive Works in April 1913.

SP&S 2-8-2 steam locomotive Number 533, Class O-3, at Vancouver, Washington in September 1953.

SP&S 2-8-2 steam locomotive Number 533, Class O-3, on the ready track at Portland, Oregon. This locomotive was formerly Northern Pacific Number 1744 and was built by Brooks Locomotive Works in April 1913. Photo by Herbert L. Arey.

SP&S 2-8-2 steam locomotive Number 533, Class O-3, from the firemans side at Portland, Oregon on September 23, 1944. Notice the wartime blackout hood on the headlight. From the Witbeck Studuio Collection.

SP&S 2-8-2 steam locomotive Number 533, Class O-3, with the fireman getting pressure up to head out on another run at Portland, Oregon in May 1947.

SP&S 2-8-2 steam locomotive Number 533, Class O-3, from the firemans side at Portland, Oregon in August 1946. Photo by Stan Styles.

SP&S 2-8-2 steam locomotive Number 532, Class O-3, with fireman posing in the window. This locomotive was formerly Northern Pacific Number 1727 and was built by Brooks Locomotive Works in April 1913.