Happy Hundredth Season NFL
Gridiron' tells stories from 100 years of the NFL. But lots of
The NFL's First Game Was Played in Dayton
National Football League - Wikipedia
National Football League - 1920 NFL Season Overview
Lesson 15: The Birth of the National Football League
The Meeting that Started the NFL
Ralph Hay Way Historical Marker
History of the NFL from the year you were born – Daily Press
The Monday After: Campaign seeks HOF enshrinement for Ralph E. Hay
Plan a Road Trip to Canton, Ohio
The NFL: 100 Years of football - Los Angeles Times
The NFL's Humble Beginnings
Black College Football Hall of Fame Classic Comes to Canton
NFL at 100: A league hatched in an Ohio auto showroom in 1920