Section, act Apr. 27, 1935, ch. 85, §16, as added Feb. 29, 1936, ch. 104, §1, 49 Stat. 1151
; amended Aug. 7, 1956, ch. 1030, §1, 70 Stat. 1115
; Sept. 14, 1960,
Pub. L. 86–793, §1, 74 Stat. 1030
; Mar. 22, 1961,
Pub. L. 87–5, §2, 75 Stat. 6
; Aug. 8, 1961,
Pub. L. 87–128, title I, §132, title IV, §401, 75 Stat. 302
, 319; Mar. 30, 1962,
Pub. L. 87–425, §2, 76 Stat. 50
; May 15, 1962,
Pub. L. 87–451, §4, 76 Stat. 70
; Sept. 27, 1962,
Pub. L. 87–703, title I, §101(4), (5), title III, §302, 76 Stat. 606
, 607, 612; May 20, 1963,
Pub. L. 88–26, §3, 77 Stat. 45
; Nov. 3, 1965,
Pub. L. 89–321, title III, §302, title VI, §602(g), 79 Stat. 1190
, 1208; Oct. 11, 1968,
Pub. L. 90–559, §1(1), 82 Stat. 996
; Nov. 18, 1969,
Pub. L. 91–118, §§1–3, 83 Stat. 194
, 195; Nov. 30, 1970,
Pub. L. 91–524, title VIII, §801, 84 Stat. 1379
; June 6, 1980,
Pub. L. 96–263, §1, 94 Stat. 438
; Nov. 28, 1990,
Pub. L. 101–624, title XIV, §1455, 104 Stat. 3614
; Nov. 2, 1994,
Pub. L. 103–437, §6(s), 108 Stat. 4587
, related to limitation on obligations incurred for purpose of carrying out certain sections and Great Plains conservation program.