History of American Football Facts: From Invention To The Super Bowl | HistoryExtra
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NFL 100 | NFL.com
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Who Invented American Football? - WhoInventedStuff
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National Football League | History, Teams, & Facts | Britannica
The “Father of American Football” is Born – Today in History: April 7 - Connecticut History | a CTHumanities Project
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Inside the NFL: What were the original 8 NFL teams? - AS USA
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The NFL: 100 Years of football - Los Angeles Times
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History of American Football Facts: From Invention To The Super Bowl | HistoryExtra
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NFL 100 | NFL.com
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