KANSAS CITY, Mo. (AP) — The Green Bay Packers and Kansas City Chiefs had no way of knowing what the Super Bowl would become when they met at the Los Angeles Memorial Coliseum on Jan. 15, 1967.

All they knew was they didn't like each other much.

The NFL had for years successfully fended off rival leagues, but the AFL came along — founded by Chiefs owner Lamar Hunt and his buddies in the "Foolish Club" — with proven staying power. Eventually the two leagues would merge, but first came a matchup between their respective champions.

The teams from the NFL, including the Packers, were out to prove t...