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
Gutzon Borglum our own," he looked to create art that was "American, drawn from American sources, memorializing American achievement," according to a 1908 interview article. Borglum was highly suited to the competitive environment surrounding the contracts for public buildings and monuments, and his public sculpture is sited all around the United States. In 1908, Borglum won a competition for a statue of the Civil War General Philip Sheridan to be placed in Sheridan Circle in Washington, D.C. A second version of "General Philip Sheridan" was erected in Chicago, Illinois, in 1923. Winning this competition was a personal triumph for him because he