Replica of the first Morse telegraph, 1835
1934
1934
1902
1902
2000-100 BCE
1902
1872 (original); 1909 (model)
1955; 1830
1990-96
1930 (replica); 1834 (original)
1801-1892 (prepared); 1946 (element replaced)
4000-2001 BCE
1934
1839 (original); circa 1988 (replica)
1705-1737
1902
1902
1772 (original); 1919 (model)
1830 (original); 1967 (model)
18 Janury 1948
1902
1902
1902
1825; 1910
1902
1970-1900
1902
1970-1875
30 CE
30 CE
2686-2613 BCE
1859; 1986
1945-50
1902
1902
1902
circa 1902
1902
1370-1350 BCE; 1931
1931; 250 BCE
1370-1350 BCE; 1931
2000-1000
1902
1908-1900
1902
1902
1950-1900
1972-3
2500 BCE
circa 1902
1971-1900