The National Cave and Karst Research Institute and the Aleutian World War II national historic areas : hearing before the Subcommittee on Parks, Historic Preservation, and Recreation of the Committee on Energy and Natural Resources, United Sates Senate, One Hundred Fourth Congress, second session, on S. 1699, to establish the National Cave and Karst Research Institute in the state of New Mexico, and for other purposes; S. 1809, entitled "Aleutian World War II National Historic Areas Act of 1966 [e.g. 1996]," July 25, 1996.