http://www.biography.com/people/jack-dempsey-9271466#synopsis
http://www.ibhof.com/pages/about/inductees/oldtimer/tunney.html
http://www.profootballhof.com/history/2010/1/9/nfls-all-decade-team-of-the-1920s/
http://www.ibhof.com/pages/about/inductees/oldtimer/tunney.html
http://www.profootballhof.com/history/2010/1/9/nfls-all-decade-team-of-the-1920s/