It contains 24 Federal laws and portions of laws that pertain to the preservation of the nation’s cultural heritage. Arranged chronologically, the laws trace the evolution of historic preservation philosophy and programs.  Included are such key laws as: ·        The 1935 Historic Sites Act, which led to the National park Service’s national survey and documentation of historic and archaeological sites, buildings and objects throughout the United States·        The National Historic Preservation Act of 1966, which expanded preservation benefits to communities nationwide and to American Indian tribes and other cultural groups·        Important Federal laws that address specific types of historic and cultural resources.