Uniondale, New York
Known as "The Boy Mayor of New York," John Purroy Mitchel was New York City's youngest-ever mayor, elected to office in 1914 when he was only 34. He died less than six months after he left office, at age 38, while he was training to join the Army Air Corps during World War I. He fell out of his biplane after his seat belt failed during a loop. The city erected a memorial to him in Central Park, and Mitchel Field, on Long Island (now the site of Nassau Community College), was named for him.