NFL rule changes cause controversy, draw ire
History of the NFL Helmet
Rules analyst: Officials got it right on non-call on Chiefs
Report: Suggested tweaks to controversial helmet rule expected on
8 Football Teams Will Have New Uniforms This Year: Here Are The
NFL Teams Stir Memories, Sales With Throwback Uniform Reveals
Officials Somehow Didn't Flag L'Jarius Sneed for Taking His Helmet
Since the NFL killed its one-shell helmet rule, here's my idea for
Leatherhead to Radio-head: The Evolution of the Football Helmet
Seattle Seahawks focusing on playing heads-up football
Leatherhead to Radio-head: The Evolution of the Football Helmet
Teddy Bridgewater using loophole in NFL rules to wear
Players Can Now Wear No. 0 as Part of NFL Rule Changes