An SP&S 4-4-2 Class C-1 steam locomotive heads a passenger train near Cascades, Washington, 1909, Fred H. Kiser Photograph, from the Oregon Historical Society Collection.

An SP&S 4-4-2 Class C-1 steam locomotive heads a passenger train near Cascades, Washington, 1909, Fred H. Kiser Photograph. This is a postcard image.

An SP&S 4-4-2 Class C-1 steam locomotive heads a passenger train near Cascades, Washington, 1909, Fred H. Kiser Photograph.

SP&S passenger train passing Castle Rock (Beacon Rock), July 7, 1914.

Color postcard view of SP&S steam locomotive with a westbound passenger train at the Cascades of the Columbia River, Steamboat 'Bailey Gatzert' on the river, postmarked September 18, 1913. This is a postcard image.

Color postcard view of SP&S steam locomotive on passenger train showing Columbia River and Cascade Mountains, postcard issued by SP&S, postmarked September 4, 1925. This is a postcard image.

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.