Replica of the first Morse telegraph, 1835
1934
1934
2000-100 BCE
1893-4
1863-7
1838
1839
1955; 1830
1838
1839
1838
1839
1775-1799 (original); 1900-1907 (model)
1839
1990-96
1839
1839
1705-1737
1838
1870-1877
1772 (original); 1919 (model)
4000-2001 BCE
1930 (replica); 1834 (original)
1838
1830 (original); 1967 (model)
1870-10
1839
1839
1883-01
1730; 1967
1872-08
1972-3
2500 BCE
1880-120
1838
1860-1820
1838
1838
1871-1830
1915-1825
1990-95
1901-950
1800-1830
1800-1830
1066; 1876
1838
1888-185
1945-50
1838
3000-1500
1838