<P> The National Historic Preservation Act was signed into law by Lyndon B. Johnson on October 15, 1966 . This act established several institutions: Advisory Council on Historic Preservation, State Historic Preservation Office, National Register of Historic Places, and the Section 106 review process . The Section 106 Process is further explained and defined in 36 CFR Part 800 . </P> <P> Meeting four times a year, the Advisory Council on Historic Preservation consists of 23 members from both public and private sectors, with the chairman appointed by the president . The Council's role is to advise the President and Congress on historic preservation issues, to develop policies and guidelines handling any conflicts of federal agencies, and to participate in the Section 106 review process . </P> <P> The National Register of Historic Places, overseen by the National Park Service, is the nation's official list of districts, sites, buildings, structures, and objects worthy of preservation, and are officially designated "historic properties" regardless of whether they are archaeological or historic . To be eligible for listing, a property must meet one of four criteria and have sufficient integrity . Being listed on or eligible for listing on the National Register does not automatically prevent damage or destruction but it qualifies these approved properties for grants, loans, and tax incentives . </P> <P> The State Historic Preservation Office (SHPO) and Officer was established by the NHPA to coordinate statewide inventory of historic properties, nominate properties to the National Register, maintain a statewide preservation plan, assist others, and advise and educate locals . There are a total of 59 SHPO officers, one for each state with eight additional ones, which include the District of Columbia, Puerto Rico, the Virgin Islands, and others . </P>

National historic preservation act of 1966 as amended