The 1968 Topps Football card set was the first release in seven years to include players from both the AFL and NFL. It would be the first of 21 consecutive years in which Topps was the exclusive licensee for professional football cards. To accommodate the additional players, the set was expanded to 219 cards, each measuring the standard 2.5 by 3.5 inches. The set checklist is dominated by Hall of Fame players, including Bart Starr (#1), Paul Warfield (#49), Joe Namath (#65), Gale Sayers (#75), Johnny Unitas (#100), Dick Butkus (#127), George Blanda (#142), Fran Tarkenton (#161), Mike Ditka (#162), and Len Dawson (#171). Key rookie cards in the set include Bob Greise (#196), Jim Hart (#60), Craig Morton (#155), Floyd Little (#173) and Jim Nance (#72).