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The musical Chicago is based on a play of the same name by reporter and playwright Maurine Dallas Watkins, who was assigned to cover the 1924 trials of accused murderers Beulah Annan and Belva Gaertner for the Chicago Tribune.
1 Nearly 40 million people visit Chicago annually. 2  Chicago was incorporated as a city in 1837. 3  Chicagoâs nicknames include: The Windy City, the City of Big Shoulders, the Second City, and The City That Works.