Anasazi Cliff Dwellings at Navajo NP

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NPS Sites Authorized this Decade: 19
Sites Authorized to Date: 26

1900 through 1909
May 22, 1902 - Crater Lake NP, OR (Established)
July 1, 1902 - Chickasaw NRA, OK (Originally Sulphur Springs Reservation; redesignated Platt NP Jun 29, 1906; combined with Arbuckle NRA & redesignated Mar 17, 1976)
January 9, 1903 - Wind Cave NP, SD
April 27, 1904 - Sullys Hill NP, ND (Originally Sullys Hill Park; "National" added later; separated from system Mar 3, 1931)
June 8, 1906 - Antiquities Act
June 29, 1906 - Mesa Verde NP, CO
September 24, 1906 - Devils Tower NM, WY
December 8, 1906 - El Morro NM, NM
December 8, 1906 - Montezuma Castle NM, AZ
December 8, 1906 - Petrified Forest NM, AZ (redesignated a NP Dec 9, 1962)
March 11, 1907 - Chaco Canyon NM, NM (redesignated as NHP Dec 19, 1980)
May 6, 1907 - Lassen Volcanic NP, CA (Originally Lassen Peak & Cinder Cone NMs; established as NP Aug 9, 1916)
January 9, 1908 - Muir Woods NM, CA
January 16, 1908 - Pinnacles NM, CA
April 16, 1908 - Natural Bridges NM, UT
September 15, 1908 - Tumacacori NHP, AZ (Originally Kino Missions NM; redesignated Aug 6, 1990)
March 20, 1909 - Navajo NM, AZ
July 31, 1909 - Zion NP, UT (Originally Mukuntuweap NM; enlarged, name changed to Zion NM Mar 18, 1918; NP Nov 19, 1919; added 2nd Zion NM 'proclaimed Jan 22, 1937' on Jul 11, 1956)
September 21, 1909 - Shoshone Cavern NM, WY (abolished May 17, 1954)
November 1, 1909 - Salinas Pueblo Missions NM, NM (Originally Gran Quivira NM; name changed to Salinas NM Dec 19, 1980; name changed to current Oct 28, 1988)