Football helmets are creating more problems than they solve
History of The Football Helmet - Atavus
First QB helmet designed to help reduce concussions approved
NFL approves use of helmet designed to reduce concussions for quarterbacks
High-tech helmets designed to lower risk of concussions make NFL debut - The Washington Post
CFL introduces mandatory extra helmet protection for multiple positions. As well as other new health & safety measures. : r/sports
First QB helmet designed to help reduce concussions, Sports
History of the NFL Helmet
Op-Ed: 5 steps to protect football players' brains and keep the sport alive - Los Angeles Times
First QB helmet designed to help reduce concussions approved
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
First QB helmet designed to help reduce concussions approved, Northwest & National News
Safety first: Lopers to wear padded caps in practice to prevent concussions
New 'QB-Specific' Helmets Unveiled, Will Kenny Pickett Wear One? - Steelers Depot