
Crick and Watson's DNA Molecular Model
1953
1953
1953
1920-1950
1948-1953
1955
1934
1899-1919
1906-1915
1839 (original); circa 1988 (replica)
1940
1951
1920-1950
1920-1950
1897-1898
1923
1903
1907
1904
1947
1935
1901
circa 1955
1910
1950
1922
1900
1950
1903
1913-1923
1935
1915
1948
1946
1900
1955
1914-1920
circa 1900
1955
1951
1943
1948
1920-1929
1912
1931
1906
1902
1930
circa 1930
1910
circa 1955