Subchapter lix-cc. Adams National Historical Park 16 U.S. Code §410eee-1. Definitions 16 U.S. Code §410eee-2. Adams National Historical Park 16 U.S. Code §410eee-3. Administration 16 U.S. Code §410eee-4. Authorization of appropriations 16 U.S. Code §410eee. Findings and purposes