
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1879
1862
1877-1897
1860
1839 (original); circa 1988 (replica)
1870
1897-1898
1885
1875
circa 1900
1872
1870
1874
1869
1874
1889
1880-1900
1879-1896
1066; 1876
1888
1878-1879
1872
1875-1890
1861
1861
1860-1900
1872-1880
1934
1896
1879
1864-1900
1870-1890
1861-1866
1871-1900
1886
1875
circa 1860
1877
1882
circa 1885
1888
circa 1868
1890
circa 1861
1890
1899
1896
1860
1900