This Helmet Will Save Football. Actually, Probably Not. - The New York Times
How Helmets Have Evolved to Prevent Football Concussions - Chester County Hospital
Behind the scenes as Michigan's equipment staff keeps football team humming
Football-related head injuries causing concern among Arizona parents
Armor on the Field: The NFL's Headlong Race to Build the Unbreakable Linebacker
Learning from InvENtors: John T. Riddell, by Edison Nation
A shortage of high school sports officials in Vermont makes scheduling games tougher than ever
New Football Helmet Could Save the Sport
This Startup Gave Football Helmets a Massive Redesign. Next Up: A Version for 6-Year-Olds