Replica of the first Morse telegraph, 1835
1934
1934
2000-100 BCE
1856
1893-4
1863-7
1955; 1830
1857
1775-1799 (original); 1900-1907 (model)
1990-96
1934
1857
1705-1737
1870-1877
1857
1856
1856-1857
1856
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
4000-2001 BCE
1857
1930 (replica); 1834 (original)
before 1857
1830 (original); 1967 (model)
1856
1856
1870-10
1856
1883-01
after 1857
1730; 1967
1872-08
1972-3
2500 BCE
1880-120
1857
1860-1820
1870-1850
1871-1830
1915-1825
1990-95
1901-950
1800-1830
1801-1850
1800-1830
1857
1066; 1876
1856
1888-185
1857