Best NFL nicknames: 101 greatest monikers in football history
Bobby Douglass had it all and could've been the next great Bears quarterback - The Athletic
Gale Sayers' greatness as a Bear left us wanting so much more - Chicago Sun-Times
George Halas — Father of the NFL - Big Blue View
Gale Sayers, the Chicago Bears' Hall of Fame running back, dies at 77: 'He was poetry in motion. His like will never be seen again.' – Hartford Courant
Gale Sayers' greatness as a Bear left us wanting so much more - Chicago Sun-Times
Keep praying for Gale': Bears legend Sayers is coming back for the team's celebration, but he needs help - The Athletic
Gale Sayers, the Chicago Bears' Hall of Fame running back, dies at 77: 'He was poetry in motion. His like will never be seen again.' – Hartford Courant
Sayers: My Life and Times eBook : Sayers, Gale, Mitchell, Fred, Butkus, Dick: Kindle Store
Bears boast legacy of legendary running backs
Remembering The Great Gale Sayers
Top 10 Players in Chicago Bears History - Sports Illustrated