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
Oval Office and figurines are frequently displayed in the Oval Office. Abraham Lincoln has been the most common subject, in works by sculptors Augustus Saint-Gaudens, Gutzon Borglum, Adolph Alexander Weinman, Leo Cherne and others. In recent administrations, traditional busts of George Washington, Thomas Jefferson or Benjamin Franklin have given way to heads of Franklin D. Roosevelt, Harry S. Truman or Dwight Eisenhower. Western bronzes by Frederic Remington have been frequent choices: Harry S. Truman displayed "Fired On"; Lyndon Johnson displayed "The Bronco Buster", as did Gerald Ford, Jimmy Carter, Ronald Reagan, Bill Clinton, George W. Bush and Barack Obama. Presidents Reagan and