16 U.S.C. § 687Section
§ 687. Grand Canyon Game Preserve included in park
Such parts of the Grand Canyon National Game Preserve, designated under authority of section 684 of this title, as are by this Act included with 1 the Grand Canyon National Park are excluded and eliminated from said game preserve.
(Feb. 26, 1919, ch. 44, §9, 40 Stat. 1178.)