Iceman Cometh: How Matt Ryan went from an option QB in high school to the Super Bowl with Falcons – New York Daily News
Bud Grant: 4 Vikings Super Bowl losses 'probably bother other people more than me' - Grand Forks Herald
How many times have the Vikings been to the Super Bowl? - Sports Illustrated
Super Bowl IX: Steelers' 'Steel Curtain' tops Vikings' 'Purple People Eaters'
Vikings History Timeline Minnesota Vikings –
Matt Ryan – Captain Comeback: NFL Analysis by Scott Kacsmar
Kapp-less 1970 Minnesota Vikings Didn't Go All the Way - The Sports Column
Vikings History Timeline Minnesota Vikings –
Minnesota Vikings: Their Four Super Bowl Failures