Mount Rushmore Turns 75: Pictures

American sculptor Gutzon Borglum (hanging below the eye) and several of his crew work on carving the head of Abraham Lincoln, part of the Mount Rushmore National Memorial, Keystone, South Dakota, in the 1930s. Frederic Lewis/Getty Images
Workmen working on the face of George Washington on Mount Rushmore, circa 1932. Underwood Archives/Getty Images
Sculptor Lincoln Borglum on the scaffold below the stone face of Theodore Roosevelt on the Mount Rushmore Memorial in the Black Hills area of Keystone, S.D., April, 1944. AP Photo
Bob Crisman and Karl Bachman, National parks Sevice rangers, do some preservation work on the Jefferson sculpture, June 15, 1992. AP Photo/Jim Mone
Mount Rushmore on a clear, crisp summer day. Getty Images
The Mount Rushmore National Memorial in the Black Hills near Keystone, S.D., 2008. AP Photo/Mike Stewart
Sculptor Lincoln Borglum and the model head of Abraham Lincoln in his studio at the Mount Rushmore National Memorial, April, 1944. AP Photo
Sculptor Gutzon Borglum's scale model for the Mount Rushmore National Memorial, circa 1925. Vintage Images/Getty Images
Sculptor Lincoln Borglum in his studio with his father's models for the Mount Rushmore National Memorial, 1944. AP Photo
Stone workers carve the eyes of Theodore Roosevelt with air hammers during the construction of the Mount Rushmore National Memorial, late 1930s to early 1940s. Frederic Lewis/Getty Images
Construction begins on the Mount Rushmore National Memorial in South Dakota, circa 1929. FPG/Hulton Archive/Getty Images
Construction begins on the Mount Rushmore National Memorial in South Dakota, circa 1929. The face of US president George Washington is already visible. FPG/Hulton Archive/Getty Images
Workmen on the faces of Mount Rushmore. Roosevelt has the scaffolding over his face, circa 1938. Underwood Archives/Getty Images
Drillers, suspended in slins fastened with cables to the winches at the top of the mountain, work on the George Washington head , July, 22, 1929. Gutzon Borglum, sculptor, directs the carving from a projecting ledge at the left. AP Photo
The carved face of George Washington on Mount Rushmore, May 2,1933. AP Photo
President Franklin Roosevelt spent part of his Sunday in Rapid City on August 31, 1936 dedicating the 70-foot image of Thomas Jefferson, being carved with those of Washington and Lincoln and Theodore Roosevelt on Mount Rushmore. The sculptor, Gutzon Borgluw, is in the center, hand over his eyes. AP Photo
Sculptor Lincoln Borglum as he swings across the stone face of Abraham Lincoln, April, 1944. AP Photo
Sculptor Lincoln Borglum as he is suspended over the stone face of Abraham Lincoln, April, 1944. AP Photo
Jens Kranhold pressure washes Abraham Lincoln's nose, July 18, 2005. AP Photo/Charlie Riedel
Cleaning of Lincoln's nose, 1962. Keystone-France/Gamma-Keystone via Getty Images
Mount Rushmore, Oct. 1, 2013. Getty Images
U.S. Navy F/A-18E Super Hornets conduct a fly by of Mount Rushmore on May 11, 2006. REUTERS
Cary Grant climbing Mount Rushmore in a scene from the film "North By Northwest," 1959. AP Photo
Mount Rushmore National Memorial carries people during the 89th Annual Macy's Thanksgiving Day Parade in New York, Nov. 26, 2015. Cem Ozdel/Anadolu Agency/Getty Images