Section, acts Aug. 13, 1946, ch. 957, title VIII, 821, 60 Stat. 1020; Aug. 5, 1955, ch. 576, 11, 69 Stat. 537; July 28, 1956, ch. 770, 9, 70 Stat. 705; Sept. 8, 1960, Pub. L. 86–723, § 34, 74 Stat. 839; Oct. 31, 1965, Pub. L. 89–308, § 9(1), 79 Stat. 1131; Feb. 28, 1970, Pub. L. 91–201, title II, § 202, 84 Stat. 18; July 12, 1976, Pub. L. 94–350, title V, § 505, 90 Stat. 837; Ex. Ord. No. 11952, 2(b)(d), Jan. 7, 1977, 42 F.R. 2293, 4809; Aug. 17, 1977, Pub. L. 95–105, title IV, § 409(b), 91 Stat. 854; Ex. Ord. No. 12145, 1104 to
1–110, July 18, 1979, 44 F.R. 42653, related to rate of annuity and commencement and termination of payments.