<P> U.S. President Theodore Roosevelt visited the Grand Canyon in 1903 . An avid outdoorsman and staunch conservationist , Roosevelt established the Grand Canyon Game Preserve on November 28 , 1906 . Livestock grazing was reduced , but predators such as mountain lions , eagles , and wolves were eradicated . Roosevelt along with other members of his conservation group , the Boone and Crockett Club helped form the National Parks Association , which in turn lobbied for the Antiquities Act of 1906 which gave Roosevelt the power to create national monuments . Once the act was passed , Roosevelt immediately added adjacent national forest lands and redesignated the preserve a U.S. National Monument on January 11 , 1908 . Opponents such as land and mining claim holders blocked efforts to reclassify the monument as a U.S. National Park for 11 years . Grand Canyon National Park was finally established as the 17th U.S. National Park by an Act of Congress signed into law by President Woodrow Wilson on February 26 , 1919 . </P>
<P> U.S. President Theodore Roosevelt visited the Grand Canyon in 1903 . An avid outdoorsman and staunch conservationist , Roosevelt established the Grand Canyon Game Preserve on November 28 , 1906 . Livestock grazing was reduced , but predators such as mountain lions , eagles , and wolves were eradicated . Roosevelt along with other members of his conservation group , the Boone and Crockett Club helped form the National Parks Association , which in turn lobbied for the Antiquities Act of 1906 which gave Roosevelt the power to create national monuments . Once the act was passed , Roosevelt immediately added adjacent national forest lands and redesignated the preserve a U.S. National Monument on January 11 , 1908 . Opponents such as land and mining claim holders blocked efforts to reclassify the monument as a U.S. National Park for 11 years . Grand Canyon National Park was finally established as the 17th U.S. National Park by an Act of Congress signed into law by President Woodrow Wilson on February 26 , 1919 . </P>
when did grand canyon become a national park
when did grand canyon become a national park
February 26 , 1919
February 26 , 1919