The story behind every NFL team name
The Longest Winning and Losing Streaks in NFL History
NFL - Q: The only undefeated team in NFL history. A: Who are the 1972 Miami Dolphins?
How Many NFL Teams Have Gone Undefeated in a Season?
Worst NFL teams and seasons ever in history of all 32 franchises - ESPN
A look at the NFL in the fabulous 1950s
The Updated History of Bad NFL Division Champs Winning in the Wild-Card Round - The Ringer
The story behind every NFL team name
Super Bowl, History, Appearances, Results, & Facts
The Updated History of Bad NFL Division Champs Winning in the Wild-Card Round - The Ringer
13 NFL teams that nearly had unbeaten regular seasons
List of last undefeated NFL teams by season - Wikipedia
Who Is The Best Team In American Football?