Replica of the first Morse telegraph, 1835
1934
1934
1908
1955; 1830
2000-100 BCE
1872 (original); 1909 (model)
1772 (original); 1919 (model)
1908
1930 (replica); 1834 (original)
1986 (replica); 1501-1600 (original)
1934
1903 (original); 1982 (model)
1990-96
1705-1737
1830 (original); 1967 (model)
4000-2001 BCE
1801-1892 (prepared); 1946 (element replaced)
1951-1900
1908-1900
1908
1971-1900
1950-1900
1908
1832-1850
1908
1908
1908
1908
1908
1908
1908
2000-1350
circa 1920; 1907
1908
1908
1908
1972-3
1945-50
1908
1908
1990-95
1902; 1913-1920
1908
30 CE
30 CE
1795-1805
1859; 1986
1908
circa 1908
circa 1908; circa 1908; circa 1908
3000-1500