Fred Cox, leading scorer in Vikings history and inventor of Nerf football, dies at 80
Fred Cox 1972 Topps #194 - Minnesota Vikings, Inventor of Nerf Football at 's Sports Collectibles Store
1968 Topps # 107 Fred Cox Minnesota Vikings (Football Card) EX/MT Vikings Pittsburgh : Collectibles & Fine Art
From the archives: How a MN Viking invented the Nerf football – Twin Cities
FRED COX 1968 Football Card Topps #107 MINNESOTA VIKINGS Pitt Kicker Good