1920 Rumford Medal

2012 2010 2008 2006 2004 2002 2000 1998 1996 1994 1992 1990 1988 1986 1984 1982 1980 1978 1976 1974 1972 1970 1968 1966 1964 1962 1960 1958 1956 1954 1952 1950 1948 1946 1944 1942 1940 1938 1936 1934 1932 1930 1928 1926 1924 1922 1920 1918 1916 1914 1912 1910 1908 1906 1905 1904 1902 1900 1898 1896 1894 1892 1890 1888 1886 1884 1882 1880 1878 1876 1875 1874 1872 1870 1868 1866 1864 1862 1860 1858 1856 1854 1852 1850