Greatest defenses of Super Bowl era - Sports Illustrated
Inside The Chicago Bears - (super Sports Teams (lerner (tm) Sports)) By Christina Hill (paperback) : Target
Super Bowl XX: 1985 Bears defense pounds Patriots - Sports Illustrated Vault
10 greatest defenses in Super Bowl history: From 1985 Bears to 2000 Ravens
Were the '85 Bears the Best Defense Ever?, The Shek Report
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Statistical analysis of the greatest defenses in NFL history - Behind the Steel Curtain
Here are the best NFL defenses in history – NBC Sports Chicago
Mind-blowing stats for the Chicago Bears
Ranking the top five Super Bowl champion defenses ever: Steel Curtain vs. the '85 Bears