
Replica of Bell's 1876 centennial telephone transmitter, 1959
1959
1959
1839 (original); circa 1988 (replica)
1957
1957
1959
1958
1957
1958
1959
1959
1957
1957
1959
1957
1959
1959
1957
1957
1959
1959
1958
2000-100 BCE
1957
1957
1957
1957
1957
1959
1958
1957
1990-96
1958
1959
1959
1958
1959
1957
1958
1957
1957
1959
1959
1959
1959
4000-2001 BCE
1958
1903 (original); 1982 (model)
1830 (original); 1967 (model)
1957
1957