(a) The Secretary of the Interior may accept the conveyance of all right, title, and interest of the trustees of Storer College in and to the lands and improvements in Harpers Ferry, West Virginia, granted to their predecessors for educational purposes pursuant to section 2 of the Act of December 15, 1868 (15 Stat. 266), upon payment to said trustees of not more than the current fair market value of the improvements located upon such lands. The Secretary may also purchase lands, interests therein, and improvements thereon, which lands were granted to the trustees of Storer College pursuant to such Act of 1868 and subsequently were alienated by the trustees: Provided, That he may pay not in excess of the amount paid therefor by the then owners plus the cost of existing improvements placed thereon by them, and, in no event may he pay more than the current fair market value. The Secretary may also purchase from the trustees of Storer College, at not more than their fair market value, other lands and interests in lands acquired by them or their predecessors as a part of the college site, together with any improvements thereon. In addition, up to seven acres of privately owned lands, interests therein, and improvements thereon, which are interspersed with the aforesaid college lands may be purchased by the Secretary. Lands and interests purchased under this subsection may be exchanged for other lands, and interests therein, of approximately equal value, which comprise the college and interspersed lands otherwise authorized herein for purchase.

(b) To facilitate the acquisition of the original site of the engine house known as John Brown's "Fort" and the old Federal arsenal, the Secretary of the Interior is authorized to exchange therefor federally owned park lands or interests in lands of approximately equal value in the vicinity of Cumberland, Maryland, which he finds are no longer required for park purposes.