In 1962 the Indiana legislature approved donating another to the district and the Lincoln Boyhood National Memorial was created. The U.S. Congress authorized the National Memorial on February 19, 1962, placing it under the National Park Service. The memorial district was listed on the National Register of Historic Places, on October 15, 1966. In 1968 the NPS created the Living Historical Farm after "meticulous research" about the period, to help visitors better understand the lives of Lincoln, his family and neighbors during the frontier years in the area.