Replica of the first Morse telegraph, 1835
1934
1934
2000-100 BCE
1908
1909
1872 (original); 1909 (model)
1955; 1830
1990-96
1908
1930 (replica); 1834 (original)
1705-1737
1903 (original); 1982 (model)
1772 (original); 1919 (model)
4000-2001 BCE
1909
1934
1839 (original); circa 1988 (replica)
1801-1892 (prepared); 1946 (element replaced)
1830 (original); 1967 (model)
1909
1908
circa 1908
1953-4
1908
1909
1909
1908
1909
1908
1908
1908
1909
1908
1825; 1910
1909
1970-1900
1909
1970-1875
1908-1909
circa 1920; 1907
30 CE
30 CE
2686-2613 BCE
1908
1859; 1986
1909
1909
1945-50
1908
1908
1370-1350 BCE; 1931