What is associated with: chicago fbi head melvin purvis helped engineer the killing of this man in 1934?

What is associated with: chicago bears 1920 1967 with a few breaks? What is associated with: chicago bears 1982 92? What is referred to by 'chicago bears no 34'? Based on the clue 'chicago con men newman redford stage an elaborate...', what is the answer? Based on the clue 'chicago gangster dion obanion had this civilian tr...', what is the answer? Based on the clue 'chicago got its first black mayor harold washingto...', what is the answer? Based on the clue 'chicago hot dog for purists', what is the answer? Based on the clue 'chicago is one town that wont let you down its thi...', what is the answer?