On December 13, 1952, the Declaration of Independence and the Constitution were transferred to the National Archives. Joining the Bill of Rights, which had been in the Archives care since 1938, they became collectively known as the Charters of Freedom, the most precious documents in our heritage. Two days later, at 10:15 a.m., on Monday, December 15, 1952 (Bill of Rights Day), the formal enshrining ceremony was held, presided over by Chief Justice Fred M. Vinson, and with President Harry Truman and other dignitaries in attendance.