
Crick and Watson's DNA Molecular Model
1953
1953
1953
1920-1950
1955
1956
1934
1948-1953
1839 (original); circa 1988 (replica)
1940
1951
1923
1920-1950
1920-1950
1938
1920
1947
1938
1948
1923-1948
1938
1935
1938
1940
circa 1955
1928
1914-1920
1935
1914-1918
1940
1936
1920-1929
1934
1950
1922
1932
1955; 1830
1950
1915-1917
1935
1951
1914
1914-1918
1918
1939-1955
1915-1918
1955
1920-1940
1925-1928
1949
1916-1917