NFL's first game played in Dayton, Ohio | NFL history
Who Invented American Football?
Early history of American football - Wikipedia
History Of American Football & How It Started – vIQtory Sports
NFL 100 | NFL.com
The NFL: 100 Years of football - Los Angeles Times
Oldest NFL Teams: What are the oldest NFL Teams? | Marca
College football history: Notable firsts and milestones | NCAA.com
National Football League | History, Teams, & Facts | Britannica
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
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
Inside the NFL: What were the original 8 NFL teams? - AS USA
The History of the Super Bowl | The American Historian
Kurt Warner | Biography & Facts | Britannica
USFL 2022: Everything you need to know | FOX Sports
History of American Football Facts: From Invention To The Super Bowl | HistoryExtra
The History of Professional Football in America | NFL Now - YouTube
History- May 14, 1874 How Canada created American football – RCI | English
The Original 14 NFL Teams | Visual.ly
