
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1870
1668; 1924
1862
1860
1870
1830 (original); 1967 (model)
1858
1871
1862
1866
1839 (original); circa 1988 (replica)
1862-1863
1862-1863
1860
1870
1860
circa 1868
1955; 1830
1857
1871
circa 1861
1867-1868
1866-1870
1858
circa 1871
1857-1870
1865
1862
1867
1867
1861
1861
1858
1865
1934
1858-03-02
1862
circa 1860
circa 1861
1859
1861-1866
1863-1865
1893-4
1858
1858
1865-1866
1866
1857-1858
1857-1858