Replica of the first Morse telegraph, 1835
1934
1934
circa 1861
1863-1865
1893-4
1865-1866
1865
1866
1865
1862
2000-100 BCE
1863-7
1865
1864
1955; 1830
1861-1866
circa 1861
1862
1990-96
1865
1934
1930 (replica); 1834 (original)
1865-1866
1862
1866
1705-1737
1862-1866
1870-1877
1888
1865
1865
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
1830 (original); 1967 (model)
1775-1799 (original); 1900-1907 (model)
1864
4000-2001 BCE
1862
1888-185
1865
1871-1830
1866
1864
1862
1864
1862
1862
1862
1862
1865
1863