When was the NFL founded? National Football League
Fantasy football: Players to start, and others to sit, in Week 18
History of American football - Wikipedia
National Football League - Wikipedia
Early history of American football - Wikipedia
NFL 100 | NFL.com
Chronology of Professional Football | Pro Football Hall of Fame Official Site
Frank Gifford dies at 84: Giants legend's impact on NFL - Sports Illustrated
Another New Football League Says It Will Start Play in 2019 - The New York Times
The History Of How Football Became America's Favorite Game | Cigar Aficionado
The “Father of American Football” is Born – Today in History: April 7 - Connecticut History | a CTHumanities Project
When Does the 2023 NFL Season Start? | BetMGM
NFL's first game played in Dayton, Ohio | NFL history
History of American football - Wikipedia
Super Bowl History: Why Are Footballs Shaped Like That? | Time
Damar Hamlin 'will play professional football again,' NFL players union doctor says - CNN
Odd & original football rules that are no longer used - Dawgs By Nature
What is the schedule for the 2022 NFL pre-season: When does it start, how many weeks are there? | Marca
Preseason NFL Football: When Does the 2021 NFL Preseason Start?
NFL 100 | NFL.com
What day does the NFL season start? Date, teams, TV schedule for 2022 season-opener | Sporting News
The NFL: 100 Years of football - Los Angeles Times
American Football Explained · Career Training USA · InterExchange
