Subchapter L. Carlsbad Caverns National Park 16 U.S. Code §407. Establishment; description of area 16 U.S. Code §407a. Administration, protection, and development 16 U.S. Code §407b. Applicability of Federal Power Act 16 U.S. Code §407d. Admission and guide fees exempt from tax 16 U.S. Code §407e. Boundaries 16 U.S. Code §407f. Exchange of lands 16 U.S. Code §407g. State right-of-way for park-type road; reconveyance of interest upon completion of road 16 U.S. Code §407h. Authorization of appropriations