Map, showing lines under construction and proposed routes and connections
The Columbia River through the Cascade Range / made under the direction of Major N. Michler, U.S. Engineers by Robt. A. Habersham
Survey of the Columbia River from The Dalles to Celilo / made under the direction of Major N. Michler, U.S. Engineers, by R. A. Habersham.
Oregon Trunk Bridge across Columbia River near Wishram, Washington, 1912
Bridge at the Cascades
SP&S employee picnic train near Cascades, Washington, August 20, 1916
SP&S North Bank Road train near Cascade, Washington, 1909
Railroad Alongside the Okanogan River