SP&S 2-8-0 steam locomotive Number 352, Class N-1, at Portland, Oregon in 1914. The cylinders are still equipped with slide valves that were later replaced with piston valves. Photo by Herbert L. Arey.

SP&S 2-8-0 steam locomotive Number 351, Class N-1, at Portland, Oregon. Photo by Herbert Arey.

SP&S 2-8-0 steam locomotive Number 351, Class N-1, in the middle of a line up of other locomotives at Portland, Oregon.

SP&S 2-8-0 steam locomotive Number 351, Class N-1, at Portland, Oregon.

SP&S 2-8-0 steam locomotive Number 351, Class N-1, at the shops at Portland, Oregon. Photo by Herbert Arey.

SP&S 2-8-0 steam locomotive Number 351, Class N-1, near the turntable at Portland, Oregon.

SP&S 2-8-0 steam locomotive Number 351, Class N-1, at Portland, Oregon. Notice the green boiler and cylinder jacketing.

SP&S 2-8-0 steam locomotive Number 351, Class N-1, at the turntable at Astoria, Oregon.

SP&S 2-8-0 steam locomotive Number 351, Class N-1, at the turntable at Astoria, Oregon.

SP&S 2-8-0 steam locomotive Number 351, Class N-1, at at the turntable at Astoria, Oregon. This locomotive was formerly Great Northern Number 473 and was built by the Brooks Locomotive Works in July 1892.