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
Needles (Black Hills) location was rejected by the sculptor Gutzon Borglum owing to the poor quality of the granite and the fact that they were too thin to support the sculptures. The Needles attract approximately 300,000 people annually. The area has a rich history of bold climbing by greatest climbers of their era, and has long been known for its purist ethics. In 1936 Fritz Wiessner climbed the "Totem Pole" and in 1937 "Khayyam Spire" with Bill House and Lawrence Coveney. In 1947 Jan and Herb Conn moved to the area and over the next couple decades put up over 220 first ascents.