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 Denmark near the Grand Lodge of New York. He received his Scottish Rite Degrees in the New York City Consistory on October 25, 1907. Borglum was a member of the Ku Klux Klan. He was one of the six knights who sat on the Imperial Koncilium in 1923, which transferred leadership of the Ku Klux Klan from Imperial Wizard Colonel Simmons to Imperial Wizard Hiram Evans. In 1925, having only completed the head of Robert E. Lee, Borglum was dismissed from the Stone Mountain project, with some holding that it came about due to infighting within the KKK, with Borglum