Replica of the first Morse telegraph, 1835
1934
1934
1955; 1830
1844
1844
2000-100 BCE
1893-4
1863-7
1775-1799 (original); 1900-1907 (model)
1990-96
1844
1705-1737
1870-1877
1844
1772 (original); 1919 (model)
1930 (replica); 1834 (original)
1801-1840 (original); 1901 (model)
4000-2001 BCE
1830 (original); 1967 (model)
1844-02-10
1870-10
1730; 1967
1872-08
1972-3
2500 BCE
1880-120
1860-1820
1871-1830
1915-1825
1990-95
1901-950
1800-1830
1800-1830
1066; 1876
1945-50
1844
3000-1500
3000-2000 BCE
1834-1836
1844
2000 BCE
1844
1844
30 CE
30 CE
circa 1844
circa 3000 BCE
1844
1844
1844
1825; 1910