Obituary: George Blanda dies at 83; football career spanned four decades - Los Angeles Times
Bears known for superstar middle linebackers
A REMEMBRANCE OF GEORGE HALAS & THE ROLE HE PLAYED IN THE SUCCESS OF THE NFL
The CRAZIEST Idea of George Halas' Career (1970 Bears)
Dick Butkus, Chicago Bears legend and Hall of Famer, dies at 80 - Los Angeles Times
This week in Chicago Bears history: May 25-31
Ranking the 15 Best Chicago Bears Players of All Time
Packers and Bears, this time for a title - The San Diego Union-Tribune
On this day 50 years ago, George Halas retired as the Head Coach of the Chicago Bears. : r/CHIBears
Dick Butkus, fearsome Hall of Fame Chicago Bears linebacker, dies at 80
Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times