Replica of the first Morse telegraph, 1835
1934
1934
1955; 1830
1862
1862
2000-100 BCE
1893-4
1863-7
1864
1775-1799 (original); 1900-1907 (model)
1990-96
1934
1705-1737
1870-1877
1772 (original); 1919 (model)
1864
1930 (replica); 1834 (original)
1862
1801-1840 (original); 1901 (model)
4000-2001 BCE
1862
1830 (original); 1967 (model)
1863-07-30
1870-10
1864
1730; 1967
1872-08
1863-1864
1863
1972-3
2500 BCE
1880-120
1870-1850
1871-1830
1915-1825
1990-95
1864
1901-950
1862
1862
1862
1862
1800-1830
1801-1850
1800-1830
1066; 1876
1862
1859; 1986
1945-50
1864
1864