Subject to subsections (b) and (c), the Secretary of the Interior may acquire land, interests in land, and improvements thereon for inclusion in the Fort Donelson National Battlefield. Such land, interests in land, and improvements may be acquired by the Secretary only by purchase from willing sellers with appropriated or donated funds, by donation, or by exchange with willing owners.
The Secretary of the Interior may acquire land, interests in land, and improvements thereon under subsection (a)-
Upon acquisition of land or interests in land described in subsection (b)(2), the Secretary of the Interior shall revise the boundaries of the Fort Donelson National Battlefield to include the acquired property.
The total area encompassed by the Fort Donelson National Battlefield may not exceed 2,000 acres.
16 U.S.C. § 428p-1