1957 Detroit Lions: Meet the championship roster; where are they now?
John Madden, Hall of Fame NFL coach and broadcaster, dies at 85 - WHYY
1957 NFL Championship Game
Hall of Famer Joe Kapp Passes Away - National Football Foundation
John Madden, Hall of Fame coach and broadcaster, dies at 85
Detroit Lions - Wikipedia
Denver Broncos Photo Tour of the Pro Football Hall of Fame
South Carolina Football Hall of Fame Announce their Class of 2022
South Carolina Football Hall of Fame announces Class of 2022
Don Shula, 1930 - 2020 Pro Football Hall of Fame