History of the National Football League championship - Wikipedia
NFL 100 | NFL.com
NFL Champions 1920-2018 | Pro Football Hall of Fame Official Site
List of NFL champions (1920–1969) - Wikipedia
Gil Brandt's greatest NFL centers of all time
The Forgotten Quarterback Who Dominated Pre-Super Bowl Era - HISTORY
Today in Pro Football History: 1933: Bears Edge Giants in First NFL Championship Game
Packers Championship Seasons | Green Bay Packers – packers.com
/cdn.vox-cdn.com/uploads/chorus_image/image/62713945/rodger_wild_card.0.jpg "The Case for Rethinking the NFL's Playoff Format - The Ringer")
The Case for Rethinking the NFL's Playoff Format - The Ringer
/cdn.vox-cdn.com/uploads/chorus_image/image/58556197/52157931.jpg.0.jpg "Super Bowl history: How the NFL's first champion was declared - SBNation.com")
Super Bowl history: How the NFL's first champion was declared - SBNation.com
ELF: Quarterbacks predict the league's first champion
/football-players-at-line-of-scrimmage--cropped-146275249-59a09bd0d963ac00114b2c4b.jpg "A Complete List of NFL Champions Since 1920")
A Complete List of NFL Champions Since 1920
National Football League - Wikipedia
Super Bowl Rewind: Look back at every Super Bowl in NFL history - New York Daily News
NFL conference championship games: Times, dates, odds, picks as Chiefs face Bengals, Rams battle 49ers - CBSSports.com
NFL roundup: Defending champion Bucs take down Eagles | Sports | Marianas Variety News & Views
The NFL: 100 Years of football - Los Angeles Times
Aden Durde: First British NFL coach using platform to champion cause close to home | Sport | The Times
Very Rare 1st Championship Game AFL vs NFL Super Bowl I Commemorative Pin Circa 1967 | Property Room
Rams' Donald: 'Only thing I am lacking is being a champion.'
The NFL: 100 Years of football - Los Angeles Times
1925 NFL Championship controversy - Wikipedia
Super Bowl winners by player: Who has the most rings in NFL history? | Sporting News
