Who Invented American Football?
The Occasionally Accurate Annals of Football by Dan Patrick, Joel H. Cohen: 9781637743683
Leatherhead to Radio-head: The Evolution of the Football Helmet, Arts & Culture
Nov 12 Birth of pro football
Why the HIGHandTIGHT Beeping Football was created - High School Football America
The NFL's Racist 'Race Norming' Is an Afterlife of Slavery - Scientific American
Native American-related teams faced pressure to change their names. Here's what's happened since.
Evolution of the NFL Player