Replica of the first Morse telegraph, 1835
1934
1934
2000-100 BCE
1893-4
1955; 1830
1894
1872 (original); 1909 (model)
1990-96
1893
1894
1893
1930 (replica); 1834 (original)
1894
1934
1839 (original); circa 1988 (replica)
1801-1892 (prepared); 1946 (element replaced)
1775-1799 (original); 1900-1907 (model)
1894
1894
1772 (original); 1919 (model)
4000-2001 BCE
1894
1894
1705-1737
1830 (original); 1967 (model)
1801-1840 (original); 1901 (model)
circa 1893
1893
1893
1825; 1910
1893-1894
1893-1894
1893-1894
1893-1894
1893-1894
1894
1893
1893
1893
1893
1970-1875
30 CE
30 CE
1893
2686-2613 BCE
circa 1894
1859; 1986
1893
1945-50
1894
1894