National Historic Preservation Act of 1966 16 U.S.C. 470 et seq. (1966), 80 Stat. 915, Pub. L. 89-665

This Act authorizes the Secretary of the Interior to "expand and maintain a national register of districts, sites, building, structures, and objects significant in American history, architecture, archeology, and culture" and to dispense matching grants-in-aid to the states for historical surveys, preservation plans, and the acquisition and development of historic properties.