History of the Green Bay Packers XIII and XIV following the 1978 and 1979 seasons and remain, to date, the only team to win back-to-back Super Bowl titles more than once, the San Francisco 49ers won Super Bowls XXIII and XXIV following the 1988 and 1989 seasons, the Dallas Cowboys won Super Bowls XXVII and XXVIII following the 1992 and 1993 seasons, the Denver Broncos won Super Bowls XXXII and XXXIII following the 1997 and 1998 seasons, and most recently, the New England Patriots won Super Bowls XXXVIII and XXXIX following the 2003 and 2004 seasons. After the franchise's victory in Super Bowl II, Vince Lombardi
American Football League Bradshaw and Joe Greene, and ultimately winning four Super Bowls in the 1970s. Since the 1970 merger, the Steelers have the NFL's highest winning percentage, the most total victories, the most trips to either conference championship game, are tied for the second most trips to the Super Bowl (with the Dallas Cowboys and Denver Broncos, trailing only the New England Patriots), and have won an NFL-record six Super Bowl championships. Perhaps the greatest social legacy of the AFL was the domino effect of its policy of being more liberal than the entrenched NFL in offering opportunity for black players. While