Subchapter lix-m. Natchez National Historical Park 16 U.S. Code §410oo-1. Establishment 16 U.S. Code §410oo-2. Acquisition of property 16 U.S. Code §410oo-3. Administration 16 U.S. Code §410oo-4. Natchez Trace study 16 U.S. Code §410oo-5. Advisory Commission 16 U.S. Code §410oo-6. Authorization of appropriations 16 U.S. Code §410oo. Purposes