A prior section 42a, acts July 1, 1941, ch. 268, 55 Stat. 450; June 26, 1944, ch. 277, title I, 58 Stat. 339; June 13, 1945, ch. 189, 59 Stat. 243; Oct. 11, 1951, ch. 485, 65 Stat. 391; July 2, 1954, ch. 455, title I, 68 Stat. 402; Aug. 5, 1955, ch. 568, 69 Stat. 503; June 27, 1956, ch. 453, 70 Stat. 359; July 31, 1958, Pub. L. 85–570, 72 Stat. 442; July 12, 1960, Pub. L. 86–628, 74 Stat. 449; Dec. 30, 1963, Pub. L. 88–248, 77 Stat. 805; July 27, 1965, Pub. L. 89–90, 79 Stat. 268; July 23, 1968, Pub. L. 90–417, 82 Stat. 400; Dec. 12, 1969, Pub. L. 91–145, 83 Stat. 342; July 9, 1971, Pub. L. 92–51, 85 Stat. 128; Oct. 31, 1972, Pub. L. 92–607, ch. V, § 506(k)(1), formerly § 506(h)(1), 86 Stat. 1508, redesignated § 506(i)(1) by Pub. L. 95–391, title I, Sept. 30, 1978, 92 Stat. 773, redesignated § 506(j)(1) by Pub. L. 96–304, title I, § 101, July 8, 1980, 94 Stat. 889, and redesignated § 506(k)(1) by Pub. L. 97–276, § 101(e), Oct. 2, 1982, 96 Stat. 1189, provided for an airmail and special-delivery postage allowance for President of the Senate, prior to repeal by section 127(a)(2) of Pub. L. 97–51.