16 U.S.C. § 273f

There are hereby authorized to be appropriated such sums as may be necessary to carry out the purposes of this subchapter, not to exceed, however, $2,173,000 for the acquisition of lands and interests in lands and not to exceed $1,373,000 for development. The sums authorized in this section shall be available for acquisition and development undertaken subsequent to December 18, 1971 .