Super bowl footballs made in Ohio
Ohio company keeps it traditional when making balls for the Super Bowl
Making the Official Football of the NFL
The Birth of the National Football League
Wilson The Duke Official NFL Leather Game Football
How Did the Pigskin Get Its Shape?, Arts & Culture
The Duke: Factory to Field—a short film by Wilson [video]
Wilson The Duke Official NFL Football
Everything you need to know about the footballs that will be used in Super Bowl XLVIII - Sports Illustrated