Top 100 Bears of all time: #25-1
Sun-Times Chicago Sports Coverage - Chicago Sun-Times
Bears 100th Season - Chicago Tribune
Ranking the 100 best Bears players ever: No. 12, Mike Singletary
As season nears, Bears full of uncertainty at cornerback — sound
2013 Chicago Bears season - Wikipedia
NFL 100: Best players in Chicago Bears history
Chicago Bears Now: Live News & Rumors + Q&A w/ Harrison Graham
Ranking the 100 best Bears players ever: No. 3, Bronko Nagurski
Bears 100th Season - Chicago Tribune