The American Football League first played games in 1960.
1920. The name was changed to National Football League in 1922.
The NFL and AFL merged in 1970.
The Canton Bulldogs were a charter team in the National Football League (then known as the American Professional Football Association) when it began play in 1920.
The AFL was founded in 1959 and the first season was in 1960.
The National Football League, at the time called the American Professional Football Association, was founded in 1920.
The National football league started in 1920.
American Football League was created in 1959.
1920. The name was changed to National Football League in 1922.
Arena football league or American football league or American Federation of Labor
Yes there was an American Football league that operated from 1960 until 1969.
All American Football League was created in 2007.
World League of American Football was created in 1991.
World League of American Football ended in 1992.
American Football League on ABC was created in 1960.
American Professional Football League was created in 2003.
American Football Women's League ended in 2003.
American Football Women's League was created in 2002.