The Antiquities Act of 1906 is an act that was passed by the United States Congress and signed into law by Theodore Roosevelt on June 8, 1906. This law gives the president of the United States the authority to, by presidential proclamation, create national monuments from federal lands to protect significant natural, cultural, or scientific features. The Act has been used more than a hundred times since its enactment.

Edgar Lee Hewett was an American archaeologist and anthropologist whose focus was the Native American communities of New Mexico and the southwestern United States. He is best known for his role in gaining passage of the Antiquities Act, a pioneering piece of legislation for the conservation movement; as the founder and first director of the Museum of New Mexico; and as the first president of the New Mexico Normal School, now New Mexico Highlands University.