SP&S steam locomotive with a passenger train on the temporary bridge over the White Salmon River which is still under construction, undated.

SP&S steam locomotive with a passenger train on the temporary bridge over the White Salmon River which is still under construction, undated.

SP&S 4-8-4 Steam locomotive Number 700, Class E-1, and another locomotive at the SP&S Vancouver depot, 1944. Photo by Garratt.

SP&S, Northern Pacific and Northern Pacific Terminal Company steam locomotives at Hoyt Street roundhouse facilities in Portland, Oregon on October 26, 1919, from the Oregon Historical Society Collection.

SP&S tool house and motor car (speeder) shed, undated. Photo by J. Mills.

SP&S mainline tracks passing under a bridge carrying a water pipe line over a river, undated. Photo by Kiser Photo Company.

SP&S trestle at Milepost 52 and view of Tunnel Number 2, undated.

Looking down on the SP&S trestle at Milepost 52 from the top of Tunnel Number 2, undated.

Looking down on the SP&S trestle at Milepost 52 from the top of Tunnel Number 2, undated.

SP&S trestle at Milepost 52 and view of Tunnel Number 2, undated.