World Football League ended in 1975.
World Indoor Football League ended in 1988.
World League of American Football ended in 1992.
World Football League was created in 1974.
Continental Football League ended in 1969.
Intense Football League ended in 2008.
Football League Extra ended in 2004.
Enterprise Football League ended in 2009.
Football League of Europe ended in 1995.
Arena Football League ended in 2009.
Regional Football League ended in 1999.
United States Football League ended in 1985.
World League of American Football was created in 1991.