; and (B) chapter 3201 of title 54, United States Code (formerly known as the Act of August 21, 1935). (2) Cooperative agreements (A) In general The Secretary may enter into cooperative agreements with the States and their political subdivisions, colleges and universities, non-profit organizations, Indian Tribes, and individuals— (i) to mark, interpret, and restore nationally significant historic or cultural and natural resources relating to the life of the Mississippian Culture within the boundaries of the historical park, if the agreement provides for reasonable public access; and (ii) to conduct research relating to the Mississippian Culture. (B) Cost-sharing (i) Federal share The Federal share of the total cost of any activity carried out under this paragraph shall not exceed 50 percent. (ii) Form of non-Federal share The non-Federal share of the cost of carrying out an activity under this paragraph may be in the form of in-kind contributions or goods or services fairly valued. (f) General management plan (1) In general Not later than 3 years after the date on which funds are made available to carry out this section, the Secretary shall prepare a general management plan for the historical park in accordance with section 100502 of title 54, United States Code. (2) Consultation In preparing the General Management Plan, the Secretary shall consult with the States and their political subdivisions, colleges and universities, non-profit organizations, Indian Tribes, and individuals, including— (A) the Illinois Department of Natural Resources; (B) the Osage Tribe; and (C) HeartLands Conservancy.