SP&S 2-8-2 steam locomotive Number 525, Class O-2, coupled to 4-4-2 Atlantic Number 609. Notice the green jacketing on the boiler and cylinder.

SP&S 2-8-2 steam locomotive Number 525, Class O-2, with crew in the cab ready to head out at Portland, Oregon on August 18, 1937. Photo by Herbert L. Arey.

SP&S 2-8-2 steam locomotive Number 525, Class O-2, taking on water at Portland, Oregon in 1937. Photo by Al Haij.

SP&S 4-4-0 steam locomotive Number 52, Class L-3, at unknown location in Oregon, undated.

SP&S 4-4-0 steam locomotive Number 52, Class L-3, in Oregon (?), undated.

SP&S 4-4-0 steam locomotive Number 52, Class L-3, with mixed freight train at Columbia Beach, Oregon circa 1911. From the Oregon Historical Society Collection.

SP&S 2-8-2 steam locomotive Number 512, Class O-1, at Portland, Oregon in May 1947.

SP&S 2-8-2 steam locomotive Number 512, Class O-1, at Portland, Oregon in August 1947. This locomotive was formerly Great Northern Number 3134 built by Baldwin Locomotive Works in September 1918.

SP&S 2-8-2 steam locomotive Number 512, Class O-1, at Portland, Oregon in April 1947.

SP&S 2-8-2 steam locomotive Number 512, Class O-1, at Portland, Oregon in 1947.