When was Mount Rushmore started?
10139
1889
1889
1890
1876
1883
1880
1872
1889
1890
1869
1876
1886
1881
1883
1879
1880
1872
1889
1890
1871
1869
1908
1876
1884
1883
1880
1872
1886
1889
1881
1890
1879
1905
1876
1883
1880
1872
1871
1869
1908
1884
1889
1890
1876
1886
1881
1885
1883
1875
1891
1880
1889
1890
1879
1905
1872
1871
1869
1908
1876
1884
1907
1886
1873
1889
1870
1881
1890
1885
1883
1880
1875
1887
1891
1868
1879
1905
1893
1872
1871
1889
1869
1908
1904
1876
1884
1907
1886
1870
1890
1873
1889
1881
1860
1885
1883
1896
1875
1887
1891
1880
1880s
1868
1879
1905
1878
1893
1877
1872
1871
1869
1860
1908
1904
1876
1884
1907
1886
1873
1870
1890
1880s
1889
1881
1860
1885
1883
1896
1875
1887
1894
1891
1890s
1880
1868
1879
1874
1905
1878
1893
1877
1872
1871
1869
1908
1892
1904
1876
1865
1884
1888
1880s
1870
1890
1890s
1907
1895
1886
1873
1889
1881
1885
1883
1896
1875
1887
1894
1882
1891
1868
1879
1874
1880
1880s
1890s
1905
1878
1893
1877
1872
1871
1869
1908
1892
1876
1904
1866
1865
1884
1907
1888
1895
1870
1890
1886
1880s
1873
1889
1881
1885