Modern history of American football - Wikipedia
Oldest NFL Teams: What are the oldest NFL Teams? | Marca
The “Father of American Football” is Born – Today in History: April 7 - Connecticut History | a CTHumanities Project
Inside the NFL: What were the original 8 NFL teams? - AS USA
NFL 100 | NFL.com
Who Invented American Football?
Young Champions' brings American football to Israel, teaching discipline and teamwork | Families & Lifestyles | jewishaz.com
Early history of American football - Wikipedia
NFL's first game played in Dayton, Ohio | NFL history
History Of American Football & How It Started – vIQtory Sports
History of American football - Wikipedia
NFL 100 | NFL.com
History- May 14, 1874 How Canada created American football – RCI | English
College football history: Notable firsts and milestones | NCAA.com
Why we watch football on Thanksgiving | CNN
History of American Football Facts: From Invention To The Super Bowl | HistoryExtra
The Birth of the National Football League - HISTORY
The “Father of American Football” is Born – Today in History: April 7 - Connecticut History | a CTHumanities Project
Odd & original football rules that are no longer used - Dawgs By Nature
Who Invented (American) Football - HISTORY
The History of the Super Bowl | The American Historian
National Football League | History, Teams, & Facts | Britannica
Who Invented (American) Football - HISTORY
Another Football League Is on the Edge of Folding - The New York Times
