140 YEARS

1875-2015

1926-19351926

U.S. Route 66 is established

1928English bacteriologist Frederick Griffith reports the results of Griffith’s experiment, indirectly proving the existence of DNA

1929The Food, Drug, and Insecticide Administration (FDIA) is established as a United States federal agency

1930The Mickey Mouse comic strip makes its first appearance

1931The Star-Spangled Banner is adopted as the United States’ National anthem Construction of The Empire State Building is completed in New York City

1932James Chadwick discovers the neutron

1935The discovery and clinical development of Prontosil, the first broadly effective antibiotic, is published in a by Gerhard Domagk and others in Germany’s pre-eminent medical journal, Deutsche Medizinische Wochenschrift

Herbert H

oover at the World Series, Philadelphia, 1929

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