16 U.S.C. § 410y: Purposes; establishment; boundaries; acquisition of lands; procedure for acquisition; time of acquisition

unless they are donated to the United States, or until a written cooperative agreement is negotiated by the Secretary which assures the administration of such lands in accordance with established administrative policies for national parks, and until the terms and conditions of such donation or cooperative agreement have been forwarded to the Committee on Energy and Natural Resources of the Senate and the Committee on Natural Resources of the House of Representatives at least sixty days prior to being executed. Within the boundaries of the park, the Secretary is authorized to acquire lands and interests therein by donation, purchase with donated or appropriated funds, or exchange, but he shall refrain from acquiring, for two years from January 8, 1971 , any lands designated on the boundary map for acquisition by any State if he has negotiated and consummated a written cooperative agreement with such State pursuant to subsection (a) of this section.