1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000		Poly History   1930s . 1931 The Empire State Building officially opens as the tallest building in the world Albert Einstein is a visiting professor at Caltech for three consecutive winter terms, once visiting Poly as a guest speaker . 1932 Los Angeles hosts the Summer Olympics for the first time . 1933 Franklin Roosevelt delivers first address as president . 1937 John Steinbeck's Of Mice and Men published . 1938 Jet Propulsion Lab is founded
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