Jim McMahon (No. 9) / George S. Halas (Team Owner). McMahon joined the Bears in 1982. After his passing, they added his initials to jerseys. The ...
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What does the 'GSH' on the Chicago Bears football jersey stand for? - Quora
What does the 'GSH' on the Chicago Bears football jersey stand for? - Quora
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The Athletic) Jim McMahon was the Bears' Super Bowl-winning wild man : r/CHIBears
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