History of the National Register of Historic Places

The history of the National Register of Historic Places began in 1966 when the United States government passed the National Historic Preservation Act (NHPA), which created the National Register of Historic Places (NRHP). Upon its inception, the U.S. National Park Service (NPS) became the lead agency for the Register.

Source: Wikipedia — History of the National Register of Historic Places (CC BY-SA 4.0)