Section 1766a, act Aug. 26, 1954, ch. 937, ch. IV, 515, as added July 18, 1956, ch. 627, 9(e), 70 Stat. 560, related to authorization for grant of contract authority. See section 2365 of this title. Section 1766b, act Aug. 26, 1954, ch. 937, ch. IV, 516, as added June 30, 1958, Pub. L. 85–477, ch. IV, 401(d), 72 Stat. 269, prohibited use of funds for debt retirement. Section 1766c, act Aug. 26, 1954, ch. 937, ch. IV, 517, as added June 30, 1958, Pub. L. 85–477, ch. IV, 401(d), 72 Stat. 269; amended July 24, 1959, Pub. L. 86–108, ch. IV, 401(e), 73 Stat. 253; May 14, 1960, Pub. L. 86–472, ch. IV, 401(e), 74 Stat. 139, related to completion of plans and cost estimates, and to computation of benefits and costs. See section 2361 of this title.