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
Spirit of the American Doughboy November 11, 1927, according to newspaper articles. A Smithsonian reference to the Palatka variant Doughboy states that it may possibly have been sculpted by Gutzon Borglum. There is no proof of this, although Viquesney's self-written obituary boasts that "he knew Borglum". Other variants were designed by Viquesney to depict different doughboy poses, but very few got past the drawing stage and none were ever realized at full scale. The largest variant actually known to be by Viquesney is a unique three-foot memorial in Lakemore, Ohio, also listed as "The Spirit of the Doughboy" by the Smithsonian. It was copyrighted in