Walter Payton, Biography & Facts
For Chicago Cubs, nicknames have always been a big hit
Today's Monsters of the Midway
These Broncos worthy of nickname that competes with best in NFL lore? – The Denver Post
10 Best Chicago Bears Running Backs of All Time - Sports Illustrated
Dick Butkus, NFL Hall of Famer and former Bears linebacker, dies at 80
Best NFL nicknames: 101 greatest monikers in football history
NFL's best players ever at every defensive position -- Is Lawrence Taylor the GOAT edge rusher? Ronnie Lott or Ed Reed at safety? - ESPN
11 Bears make list of top 101 greatest NFL nicknames ever
The greatest NFL nickname of all-time belongs to Walter Payton - Windy City Gridiron
Chicago Bears pay tribute to 'ultimate Bear' Dick Butkus after his death aged 80
Bears in the Pro Football Hall of Fame
Ranking top 25 players in NFL history: Dick Butkus has prominent place on league's all-time list