2019 Western Carolina Catamount Football Media Guide by Western Carolina University Athletics - Issuu
NFL hopes to reduce head injuries with helmet experiment, FOX 4 Kansas City WDAF-TV
NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets
NFL makes Guardian Caps mandatory for many positions through second preseason game - NBC Sports
Guardian Cap Results: “Exceeded Our Expectations”
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
Could Guardian Caps be used during NFL games for player safety?, Pro Football Talk
Bill Barrable on LinkedIn: NFL executive hints that Guardian Caps could eventually be worn in games…
Guardian Caps: Why some NFL players are wearing them in training camps
Could Guardian Caps be used during NFL games for player safety?, Pro Football Talk