Monument Canyon at Colorado NM

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NPS Sites Authorized this Decade: 16
NPS Sites Authorized to Date: 42

1910 through 1919
March 23, 1910 - Sitka NM, AK (redesignated a NHP 1972)
May 11, 1910 - Glacier NP, MT (established)
May 30, 1910 - Rainbow Bridge NM, UT
May 16, 1911 - Lewis & Clark Cavern NM, MT (abolished May 24, 1937)
May 24, 1911 - Colorado NM, Colorado (proclaimed)
January 31, 1914 - Papago Saguaro NM, AZ (abolished April 7, 1930)
January 26, 1915 - Rocky Mountain NP, CO
October 4, 1915 - Dinosaur NM, CO-UT (expanded into CO Jul 14, 1938)
July 8, 1916 - Acadia NP, ME (Originally Sieur de Monts NM; redesignated Lafayette NP Feb 26, 1919; redesignated Acadia NP Jan 19, 1929)
August 1, 1916 - Hawaii Volcanoes NP, HI (Originally Hawaii NP; split into Haleakala NP and Hawaii NP 1960; latter redesignated Hawaii Volcanoes NP Sep 22, 1961)
August 9, 1916 - Capulin VolcanoNM, NM (Originally Capulin Mountain NM; redesignated Dec 31, 1987)
August 25, 1916 - National Park Service Act
February 26, 1917 - Denali NP, AK (Originally Mount McKinley NP; separate Denali NM proclaimed Dec 1, 1978; both incorporated into Denali NP and NPres Dec 2, 1980)
Septemeber 24, 1918 - Katmai NP, AK (Originally Katmai NM; incorporated in Katmai NP and NPres Dec 2, 1980)
August 15, 1919 - Grand Canyon NP, AZ (transferred from the Forest Service, USDA; Jan 11, 1908 Grand Canyon NM; established as NP Feb 26, 1919)
December 12, 1919 - Scotts Bluff NM, NE
December 12, 1919 - Yucca House NM, CO