Lincoln Borglum had nearly completed the 60-foot heads of the four presidents (Washington, Jefferson, Lincoln and T. Roosevelt) when he died on March 6, 1941. Lincoln Borglum had to abandon his father's ambitious plans to carry the work down to include the torsos of the presidents and an entablature due to a lack of funding; he left the monument largely in the state of completion it had reached under his father's direction. Borglum was appointed Mount Rushmore National Memorial's first superintendent and began serving on October 1, 1941. The work on the monument officially stopped on October 31, 1941. He served in
Solon Borglum group of the sculptor's descendants gave twenty bronzes, marbles, original plasters, portfolios of drawings and paintings to the New Britain Museum of American Art. Today the Museum houses the largest repository of Borglum's works. Borglum sculpted a larger than life bronze equestrian statue for the "Bucky O'Neill Monument, Rough Rider" at the Yavapai County Court House Plaza in Prescott, Arizona. Teddy Roosevelt had persuaded Buckey O'Neill to join the Rough Riders and he was killed at the Battle of San Juan Hill. Borglum's statue "Cowboy at Rest" is also located on the grounds of the Yavapai County Court House in