To carry out the purposes of sections
450bb to
450bb–2 of this title, the Secretary of the Interior (referred to in sections
450bb to
450bb–2 of this title as the “Secretary”) is authorized to acquire, by purchase from a willing seller with donated or appropriated funds, by donation, or by exchange, land or an interest in land within the boundaries as generally depicted on the map entitled “Boundary Map, Harpers Ferry National Historical Park”, numbered 385–80,021A, and dated April 1979.