Banner for the Super Bowl IV for the game of the Kansas City Chiefs vs the Minnesota Vikings played on January 11, 1970 at the Tulane Stadium in New Orleans, Louisiana. Super Bowl IV - Minnesota Vikings vs Kansas City Chiefs

Kansas City Chiefs' coach Hank Stram, left, holds an umbrella for quarterback Lynn Dawson after they arrived in the rain at New Orleans Airport, Jan. 5, 1970. The Chiefs, champions of the AFL, meet NFL champs, the Minnesota Vikings on Sunday at the Super

Len Dawson of the Kansas City Chiefs runs through passing drills with receivers in New Orleans on Jan. 10, 1970 to prepare for the Super Bowl. Dawson will be the starting quarterback in the fourth annual World Championship game.

Pro Football Hall of Fame and Kansas City Chiefs quarterback Len Dawson (16) calls the play in the huddle during the Chiefs 23-7 victory over the Vikings in Super Bowl IV on 1/11/1970 at Tulane Stadium in New Orleans Louisiana. Super Bowl IV - Minnesota

Kansas City Chiefs quarterback Len Dawson (16) turns around to hand the ball off to running back Mike Garrett (21) in Super Bowl IV in New Orleans, Louisiana, Jan. 11, 1970, against the Minnesota Vikings.

Kansas City Chiefs place kicker Jan Stenerud kicks a field goal against the Minnesota Vikings in Super Bowl IV in Louisiana, Jan. 11, 1970.

Kansas City place kicker Jan Stenerud kicks a 48-yard field goal in the first quarter of Super Bowl action against the Minnesota Vikings, Jan. 11, 1970,

Kansas City Chiefs' coach Hank Stram walks on the field prior to the Super Bowl game with the Minnesota Vikings in New Orleans, Jan. 11, 1970. The stands in the background are starting to fill up as game time nears.

Kansas City Chiefs quarterback Len Dawson prepares to handoff to running back Mike Garrett (21) as running back Robert Holmes (45) and guard Ed Budde (71) lead the play during the Super Bowl in New Orleans on Jan. 11, 1970.

Kansas City quarterback Len Dawson is grabbed by a Minnesota defender after handing off to running back Mike Garett during first half action in the Super Bowl in New Orleans on Jan. 11, 1970. Garrett scored a touchdown on the play.

Kansas City Chiefs linebacker Jim Lynch (51) opposing the Minnesota Vikings offense in the Chiefs 23-7 victory over the Vikings in Super Bowl IV on January 11, 1970 at Tulane Stadium in New Orleans, Louisiana. Super Bowl IV - Minnesota Vikings vs Kansas

Kansas City Chiefs guard Ed Budde (71) lines up during Super Bowl IV, a 23-7 victory over the Minnesota Vikings on January 11, 1970, at Tulane Stadium in New Orleans, Louisiana. Super Bowl IV

Kansas City Chiefs running back Wendell Hayes (38) runs in the open field during Super Bowl IV, a 23-7 victory over the Minnesota Vikings on January 11, 1970, at Tulane Stadium in New Orleans, Louisiana. Super Bowl IV

Kansas City Chiefs Coach Hank Stram is carried from the field, Jan. 11, 1970, in New Orleans, after his team defeated the Minnesota Vikings in Super Bowl IV. Stram has been with Kansas City since the league started in 1960.