USFL 2022: Everything you need to know | FOX Sports
College football history: Notable firsts and milestones | NCAA.com
Another Football League Is on the Edge of Folding - The New York Times
Oldest NFL Teams: What are the oldest NFL Teams? | Marca
Who Invented (American) Football - HISTORY
Early history of American football - Wikipedia
History of American football - Wikipedia
National Football League | History, Teams, & Facts | Britannica
The History of Professional Football in America | NFL Now - YouTube
The NFL: 100 Years of football - Los Angeles Times
Kurt Warner | Biography & Facts | Britannica
The Founding of American Football | SportRx
History- May 14, 1874 How Canada created American football – RCI | English
NFL's first game played in Dayton, Ohio | NFL history
The “Father of American Football” is Born – Today in History: April 7 - Connecticut History | a CTHumanities Project
Young Champions' brings American football to Israel, teaching discipline and teamwork | Families & Lifestyles | jewishaz.com
History of American Football Facts: From Invention To The Super Bowl | HistoryExtra
The “Father of American Football” is Born – Today in History: April 7 - Connecticut History | a CTHumanities Project
Who Invented (American) Football - HISTORY
The History of the Super Bowl | The American Historian
Who Invented American Football? - WhoInventedStuff
Modern history of American football - Wikipedia
Why we watch football on Thanksgiving | CNN
Odd & original football rules that are no longer used - Dawgs By Nature
