Replica of the first Morse telegraph, 1835
1934
1934
1879
circa 1880
1893-4
1879
2000-100 BCE
1879
1879
1872 (original); 1909 (model)
1955; 1830
1880
1880
1990-96
circa 1880
1880
1880
1934
1930 (replica); 1834 (original)
1879
circa 1880
1879
1705-1737
1888
1880
1879
1879
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
1830 (original); 1967 (model)
1775-1799 (original); 1900-1907 (model)
4000-2001 BCE
1888-185
1880
1879
1880
1880
1880
1880
1880
1880
1880
1880
1880
1880
1879
2000-1350
1880
1883-01
1972-3
1945-50