; (B) Randolph County, Illinois; (C) the village of Prairie du Rocher; and (D) the State Department of Natural Resources. (b) Cooperative agreements The Secretary may enter into cooperative agreements with the entities described in paragraph (2) of subsection (a) for the development of— (1) the interpretive visitor center complex authorized under paragraph (1) of that subsection; and (2) educational programs and materials to facilitate the public use of the Historical Park and the Historic District. 7. Acquisition of land (a) In general Except as provided in subsection (b), the Secretary may acquire land and interests in land within the boundaries of the Historical Park by— (1) donation; (2) purchase with donated or appropriated funds; or (3) exchange. (b) Exception Notwithstanding subsection (a), land and interests in land that are owned by the State or any political subdivision of the State may be acquired for the Historical Park under that subsection only by donation or exchange. 8. Donations (a) Acceptance The Secretary may accept donations of funds, property, or services from individuals, foundations, or other public or private entities for the purposes of providing programs, services, facilities, and technical assistance that further the purposes of this Act. (b) Expenditure Any funds donated to the Secretary under subsection (a) may be expended by the Secretary without further appropriation. 9. Grant assistance (a) In general Subject to the availability of appropriations, the Secretary may make grants to partners of the Historical Park for eligible projects described in subsection (b). (b) Description of eligible projects An eligible project referred to in subsection (a) is a project— (1) that does not require Federal involvement other than the provision of financial assistance; (2) for the construction and development of non-Federal land and structures within the boundaries of the Historic District; (3) that support the purposes of the Historical Park