NFL players don Guardian Caps, designed to protect from concussion
Bennet Omalu, Concussions, and the NFL: How One Doctor Changed Football Forever
NFL studying helmet face guard that works like surgical mask
Collector's Display Case Cabinet Wall Rack Compatible with Riddell Mini Football Helmet 1:2 Scale, or 1/24 -1/18 Scale Diecast Toy Model Toy Cars Wheels Storage Shelves Showcase Black Finish : Sports & Outdoors
Football-related head injuries causing concern among Arizona parents
New football helmets could limit brain injuries
Helmet shortage could disrupt early football practices - Los Angeles Times
Virginia Tech Professor Explains Helmet Research
How Helmets Have Evolved to Prevent Football Concussions - Chester County Hospital
What's with padded helmet caps teams are wearing
Can a Better Football Helmet Save Your Kid's Brain? - Washingtonian
Head Injuries & American Football - Ethics Unwrapped
Behind the scenes as Michigan's equipment staff keeps football team humming
Football helmets have improved but are far from 'concussion proof' – San Bernardino Sun