NFL Concussion Problem is Solvable
Once shunned by NFL, 'disruptive' helmet inventor believes his
NFL's use of Guardian padded helmet caps in camp draws support and
Asked and Answered: June 14
A Deep Dive on the Bills' Red-Helmet Era - by Paul Lukas
A Deep Dive on the Bills' Red-Helmet Era - by Paul Lukas
Brown] All the Bills' linemen are wearing an extra helmet
On NFL Concussions And Mark Kelso's Giant Helmet - Buffalo Rumblings
Mark Kelso Football helmets, Buffalo bills, Football
Helmets go Head-to-Head in NFL Testing
Buffalo Bills: Top 5 Safeties in Franchise History - Page 2