Replica of the first Morse telegraph, 1835
1934
1934
1837
1893-4
1834
1834
1834
1837
1837
1837
1837
1835
1836
2000-100 BCE
1863-7
1837
1955; 1830
1835
1837
1990-96
1835
1835
1930 (replica); 1834 (original)
1837
1705-1737
1870-1877
1837
1772 (original); 1919 (model)
1830 (original); 1967 (model)
1775-1799 (original); 1900-1907 (model)
4000-2001 BCE
1888-185
1871-1830
1837
1837
1836
1837
1834
1834
1834
1834
1834-1835
1834
1834
1835
2000-1350
1883-01
1972-3
1945-50
1990-95
circa 1834