Mount Rushmore still disputed on the basis of the 1868 Treaty of Fort Laramie (see section "Controversy" below). Among American settlers, the peak was known variously as Cougar Mountain, Sugarloaf Mountain, Slaughterhouse Mountain, and Keystone Cliffs. It was named Mount Rushmore during a prospecting expedition by Charles Rushmore, David Swanzey (husband of Carrie Ingalls), and Bill Challis. Historian Doane Robinson conceived the idea for Mount Rushmore in 1923 to promote tourism in South Dakota. In 1924, Robinson persuaded sculptor Gutzon Borglum to travel to the Black Hills region to ensure the carving could be accomplished. Borglum had been involved in sculpting the
Washington State Route 206 Washington State Route 206 State Route 206 (SR 206, named the Mount Spokane Park Drive) is a state highway serving Mount Spokane State Park in the U.S. state of Washington. Beginning at U.S. Route 2 (US 2) north of Mead, the highway travels east through unincorporated Spokane County and northeast into the Selkirk Mountains, ending at the entrance to Mount Spokane State Park. The roadway, first constructed in the 1890s and reconstructed several times, was designated as SR 206 during the 1964 highway renumbering. SR 206 begins as Mount Spokane Park Drive at an intersection with US 2 north of