NFL's new 'lowering-of-helmet' rule could change football as we know it
The NFL Breaks the One-Helmet Rule – Green Gridiron, Inc.
Throwback look in NFL could be more common in 2021 with possible helmet rule change - ESPN
NFL's new helmet rule is based on right intentions, player safety
NFL contemplating rule change for helmets that could lead to return of multiple classic throwback uniforms
The N.F.L.'s New Tackling Rule: The Good, the Bad and the Confusing - The New York Times
NFL offseason priorities for 2023: Possible rules changes, safety reforms - ESPN
George Halas — Father of the NFL - Big Blue View
Explaining NFL's new helmet rule: FAQs about league's 'culture change'
Washington Redskins name betting odds, NFL gambling
Why the NFL Is (Somehow) America's Most Resilient Institution - POLITICO