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This button comes from Richard J. Daley's bid to become mayor of Chicago in 1971. Daley, a Democrat, was first elected to the position in 1955, and was elected five more times, 1971 being his fifth time. While in office, Daley worked hard towards keeping Chicago from declining and oversaw the construction of iconic landmarks like Sears Tower, and O'Hare International Airport. Daley worked as Chicago's mayor for 21 years, a length of time only surpassed by his son, Richard M. Daley.
Richard J. Daley. (n.d.). Retrieved October 7, 2015 from: https://en.wikipedia.org/wiki/Richard_J._Daley.