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 By the time the show was ready to open, however, Borglum had resigned from the committee, feeling that the emphasis on avant-garde works had co-opted the original premise of the show and made traditional artists like himself look provincial. He moved into an estate in Stamford, Connecticut in 1914 and lived there for 10 years. Borglum was an active member of the Ancient Free and Accepted Masons (the Freemasons), raised in Howard Lodge #35, New York City, on June 10, 1904, and serving as its Worshipful Master 1910–11. In 1915, he was appointed Grand Representative of the Grand Lodge of