SP&S 2-8-2 steam locomotive Number 539, Class O-3, leaving by the site of the old Northern Pacific Pasco, Washington depot, July 13, 1955. Photo by Al Farrow.

SP&S 4-4-0 steam locomotive Number 50, Class L-1, with the Superintendent's business car at the Blind Slough, Oregon drawbridge, circa 1910.

SP&S 2-8-0 steam locomotive Number 370, Class N-3, at station stop at Willbridge, Oregon with a freight train, undated, from the Don Roberts Collection.

SP&S 2-8-0 steam locomotive Number 370, Class N-3, in a wreck east of Wishram, Washington, undated.

SP&S 2-8-0 steam locomotive Number 370, Class N-3, with a freight train at the Willbridge, Oregon depot, undated. From the Oregon Historical Society Collection.

SP&S 2-8-0 steam locomotive Number 364, Class N-3, with the yard transfer to Lake Yard in Portland undated.

SP&S 4-6-0 steam locomotive Number 160, Class D-7, with Army officers watching at Columbia Beach, Oregon, June 1927.

SP&S 4-6-0 steam locomotive Number 158, Class D-3, with an eastbound passenger train in Washington State, undated. From the Pennsylvania Railroad Museum Collection.

SP&S 4-6-0 steam locomotive Number 157, Class D-3, departing with a passenger train from Portland, January 2, 1922, from the J.F. Adams Collection.

SP&S 4-6-0 steam locomotive Number 152, Class D-3, with a derailed passenger train near Deer Island, Oregon, undated. From the Oregon Historical Society Collection.