16 U.S.C. § 460l-10c
Section, Pub. L. 88-578, title I, §11, formerly §2(a) (in part), Sept. 3, 1964, 78 Stat. 899; renumbered §10, Pub. L. 90-401, §1(a), July 15, 1968, 82 Stat. 354; renumbered §11, Pub. L. 92-347, §2, July 11, 1972, 86 Stat. 459, repealed provisions prohibiting collection of recreation fees or user charges.