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Leatherhead to Radio-head: The Evolution of the Football Helmet | Arts & Culture| Smithsonian Magazine
Unprecedented Rate Of Improvement Stimulated In Helmet Industry, New Standard Set For 'Top-Performing' Helmet Models Worn By NFL Players
NFL Helmet Challenge Raises the Bar for Helmet Technology and Performance, Awards $1.55 Million in Grant Funding to Help New Models Get on Field Faster
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NFL Football Operations on Twitter: "Take a look at specific examples of @ NFL uniform & equipment rules/violations for each team: https://t.co/u3DdAe5QyG https://t.co/uWNOC8JKzp" / Twitter
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