SP&S steam locomotive with a westbound passenger trainat the Cascades of the Columbia River, Steamboat 'Bailey Gatzert' on the river, undated.

SP&S steam locomotive with westbound passenger train exiting tunnel along the Columbia River, undated. Photo by Angelus Commercial Studio.

SP&S steam locomotive with eastbound passenger train along Columbia River, undated. Photo by the Kiser Photo Company.

SP&S track along the Columbia River with a view of Castle Rock (Beacon Rock), August 4, 1914. This is a postcard image.

From the top of Beacon Rock we see five Great Northern EMD GP9 diesel locomotives on freight train SWG as it heads to Vancouver, Washington. This train originated on the Santa Fe railroad in California. Bob Johnston Photograph.

SP&S track along the Columbia River with a westbound train at Beacon Rock, undated. Angelus Commercial Studio Photograph.

A view of SP&S track at Cooks, Washington with the steamboat 'Dalles City' on the Columbia River, undated.

Oregon-Washington Railroad & Navigation tracks at the Cascade Locks with steamboat leaving the locks, undated. Cross & Dimmitt Photograph. This is a postcard image.

An SP&S passenger train at Tongue Point, Oregon on its way to Astoria, 1914. Photo by Fred Kiser.

Color postcard view of the Columbia River from Bingen-White Salmon, Washington, undated. This is a postcard image.