Ranking top 25 players in NFL history: Dick Butkus has prominent place on league's all-time list

Power Ranking the 25 Toughest NFL Players of All-Time, News, Scores, Highlights, Stats, and Rumors

The Most Famous Football Player From Every State

NFL 100: The top 50 players in league history

Power Ranking the 25 Toughest NFL Players of All-Time, News, Scores, Highlights, Stats, and Rumors

WCG Top 100 Chicago Bears players of all-time: 100-1 - Windy City Gridiron

Power Ranking the 25 Toughest NFL Players of All-Time, News, Scores, Highlights, Stats, and Rumors

NFL 100: At No. 10, Bears' Dick Butkus instilled fear to become 'the ideal linebacker' - 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

FMIA Week 5: Brock Purdy is your new MVP frontrunner, and remembering Dick Butkus - NBC Sports

Updating and Ranking The 50 Greatest NFL Players of all time