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
Cornelia Van Auken Chapin had formerly belonged the Gutzon Borglum, with Marion Sanford. In the summer of 1949 she was one of 250 sculptors who exhibited in the 3rd Sculpture International held at the Philadelphia Museum of Art. From 1951 to 1953 Chapin served on the New York City Art Commission. Chapin was most famous for her sculptures of birds and animals, though she also sculpted human figures. Between 1930 and the early 1960s, Chapin exhibited in galleries in New York, Connecticut, Pennsylvania, California, Washington, DC, New Jersey, Maine, and Paris, and won numerous awards and prizes for her work during the 1930s and