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.

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.