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American football - Wikipedia
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Invention of American Football
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Who Invented (American) Football - HISTORY
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Leatherhead to Radio-head: The Evolution of the Football Helmet | Arts & Culture| Smithsonian Magazine
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History of American Football - Etsy
The History of the Super Bowl | The American Historian
The “Father of American Football” is Born – Today in History: April 7 - Connecticut History | a CTHumanities Project
History of American Football: Who Invented American Football? -
