The NFL: 100 Years of football - Los Angeles Times
American Football: A quick look at the history of the sport
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American football: Sarah Fuller makes history as first woman in a Power 5 game - BBC News
History of American Football Facts: From Invention To The Super Bowl
PBS Documentaries to Highlight Black Players in Pro Football
How race plays into the history of the Super Bowl and professional football
National Football League (NFL), History, Teams, & Facts
Chronology of Professional Football
History- May 14, 1874 How Canada created American football – RCI
Early history of NFL rich with Native American standouts
Super Bowl History: Why Are Footballs Shaped Like That?
The History of Professional Football in America