File:Chicago Bears vs Green Bay Packers 3.jpg - Wikipedia
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History of the Chicago Bears - Wikipedia
Focus On: 100 Most Popular Chicago Bears Players: Jay Cutler (American football), Martellus Bennett, Walter Payton, Devin Hester, Brandon Marshall, Victor Mike Ditka, Kyle Long, Doug Flutie, etc. - Kindle edition
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Logos and uniforms of the Chicago Bears - Wikipedia
Chicago Bears, American Football Wiki