Mount Rushmore was built by Gutzon Borglum and his son Lincoln Borglum in the twentieth century.
 Sculptor Gutzon Borglum created the sculpture's design and oversaw the project's execution from 1927 to 1941 with the help of his son, Lincoln Borglum
 Congress passed the Mount Rushmore National Memorial Act, signed by Coolidge, which authorized up to $250,000 in matching funds

