Gutzon Borglum seven years. When Houser left Gutzon to devote his talents to his own work, Gutzon's son, Lincoln, took over as Assistant-Sculptor to his father. Borglum alternated exhausting on-site supervising with world tours, raising money, polishing his personal legend, sculpting a Thomas Paine memorial for Paris and a Woodrow Wilson memorial for Poznań, Poland (1931). In his absence, work at Mount Rushmore was overseen by his son, Lincoln Borglum. During the Rushmore project, father and son were residents of Beeville, Texas. When he died in Chicago, following complications after surgery, his son finished another season at Rushmore, but left the monument
Gutzon Borglum Rushmore project, 1927–1941, was the brainchild of South Dakota state historian Doane Robinson. His first attempt with the face of Thomas Jefferson was blown up after two years. Dynamite was also used to remove large areas of rock from under Washington's brow. The initial pair of presidents, George Washington and Thomas Jefferson was soon joined by Abraham Lincoln and Theodore Roosevelt. Ivan Houser, father of John Sherrill Houser, was assistant sculptor to Gutzon Borglum in the early years of carving; he began working with Borglum shortly after the inception of the monument and was with Borglum for a total of