16 U.S.C. § 7a
Section, act Mar. 18, 1950, ch. 72, §1, 64 Stat. 27; Pub. L. 85-726, title XIV, §1402(e), Aug. 23, 1958, 72 Stat. 807; Pub. L. 91-258, title I, §52(b)(1), May 21, 1970, 84 Stat. 235, related to airports in national parks, monuments and recreation areas; construction, etc. See section 101501(b) of Title 54, National Park Service and Related Programs.