The First Plastic Football Helmet Often Broke on Impact - The Atlantic
Football Helmets for 2017 - Riddell and Schutt Helmet Technology
NFL players will honor racism victims with names on helmet decals
New Helmets for Gallaudet Football Will Enable Deaf Athletes to See Plays (Exclusive)
Why Marine City Cardinal Mooney football spent $35,000 on new helmets
Better helmets, sensored mouth guards part of effort to make football safer
This Helmet is Called “Zero1”— Could it be a TEN? - Mid-Atlantic Concussion Alliance
Alex Smith Is Wearing a New Helmet Designed to Reduce Concussions
Vicis expands funding round with help from NFL quarterbacks Alex Smith and Aaron Rodgers - Puget Sound Business Journal
Football helmets have improved but are far from 'concussion proof' – San Bernardino Sun
Can Custom-Fit Football Helmets Protect Athletes From Brain Trauma?, Chicago News