Updates the boundaries and public map for Marsh‑Billings‑Rockefeller National Historical Park, designates how the King Farm parcel is to be managed and used, changes how the Park may acquire land, and establishes a Park-based National Park Service Stewardship Institute to promote stewardship through workshops, research, education, and sharing best practices. The bill requires the official boundary map be kept on file for public inspection and sets permitted uses for King Farm including agriculture, conservation that preserves its working‑farm character, and education, with reciprocal access rights for the parcel.