Replica of the first Morse telegraph, 1835
1934
1934
1853
1855
1893-4
1854
circa 1854
circa 1854
1855
2000-100 BCE
1854
1855
1863-7
1853
1852
1955; 1830
1854
1990-96
1855
1934
1930 (replica); 1834 (original)
1855
1852
1855
circa 1854
1855
1705-1737
1870-1877
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
1830 (original); 1967 (model)
1775-1799 (original); 1900-1907 (model)
4000-2001 BCE
1853
1888-185
1871-1830
1855
1852
1855
1853
1852
1852
1855
1854
1853
1853
1852
2000-1350
1883-01
1972-3
1855