NFL players wore the No. 0 for the first time in league history in Week 1 - Sports Illustrated
History
The Long History of American Football in the UK | Sport in American History
NFL 100 | NFL.com
History of American Football: You Can Thank T.R. for the NFL
Column: Native Americans part of NFL history | Opinion | salemnews.com
A Statistical History of Pro Football - McFarland
Football in Columbus, Ohio
American Football History: Timeline & How it started
How this pioneer made NFL history as the first Mexican Hall of Famer
OAH | The History of the Super Bowl
History of American Football Facts: From Invention To The Super, only player to win super bowl with 3 different teams - thirstymag.com
History of American football - Wikipedia
25 Greatest Running Backs in NFL History - AthlonSports.com | Expert Predictions, Picks, and Previews
NFL 100: Our full list of greatest players of all time
Who Invented Football? | HISTORY
NFL 100 | NFL.com
History Of American Football & How It Started - vIQtory Sports
Early History of NFL Rich with Native American Standouts | Pro Football Hall of Fame
Lets Take A Look At The History Of American Football
National Football League (NFL) | History, Teams, & Facts | Britannica
Early history of American football - Wikipedia
Book looks at history of American football in Europe | Stars and Stripes
