The National Football League is a professional American football league consisting of 32 teams, divided equally between the National Football Conference and the American Football Conference.
A professional american football league consisting of 32 teams
The National Football League is a professional American football league consisting of 32 teams, divided equally between the National Football Conference and the American Football Conference.
June 24, 1922
October 21, 1920
September 21, 1920
August 21, 1920