Replica of the first Morse telegraph, 1835
1934
1934
circa 1868
1893-4
1866
2000-100 BCE
1867
1867-1868
1955; 1830
1869
1867
1867
1990-96
1869
1934
1930 (replica); 1834 (original)
1868
1866
1705-1737
1870-1877
1888
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
1830 (original); 1967 (model)
1775-1799 (original); 1900-1907 (model)
4000-2001 BCE
1888-185
1871-1830
1866
1868
1869
1867
1867
1867
1868
2000-1350
1883-01
1972-3
1867
1945-50
1866
1990-95
1869
1866
1866
1866
1866
1870-10
circa 1868
30 CE
30 CE