Section, Pub. L. 88–578, title I, § 9, formerly § 8, as added Pub. L. 90–401, § 4, July 15, 1968, 82 Stat. 355; amended Pub. L. 91–308, § 3, July 7, 1970, 84 Stat. 410; renumbered § 9, Pub. L. 92–347, § 2, July 11, 1972, 86 Stat. 459, and amended Pub. L. 93–303, § 3, June 7, 1974, 88 Stat. 194, related to contracts for acquisition of lands and waters. See section 200308 of Title 54, National Park Service and Related Programs.

A prior section 9 of Pub. L. 88–578 was renumbered section 10 and was classified to section 460l–10b of this title prior to repeal by Pub. L. 113–287.