National Parks timeline By morgynhagy4 Oct 1, 1890 Yosemite NP established May 22, 1902 Creator Lake NP established May 11, 1910 Glacied NP established Jul 8, 1912 Acadia NP established Feb 26, 1917 Denali NP established Feb 26, 1920 Grand Tetons NP established Jun 15, 1934 Great Smokey Mountains NP established Dec 26, 1935 Shenandoah NP established
