
Crick and Watson's DNA Molecular Model
1953
1953
1953
1920-1950
1955
1934
1956
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
1950
1922
1932
1955; 1830
1950
1955
1954-1955
1914-1918
1915-1918
1918
1913-1923
1936
1914-1918
1935
1945
1932
1926
1918
1925-1928
1914
1934
1940-1945
1915-1925
1915
1948