Sections, acts July 3, 1930, ch. 837, §§ 1–7, 46 Stat. 856; Mar. 3, 1931, ch. 405, 46 Stat. 1490; June 5, 1936, ch. 525, §§ 1, 2, 49 Stat. 1483, which related to Colonial National Historical Park, were transferred to sections 81, 81a, 81c, and 81e to 81i of this title.