Tackle Football in Childhood: Does Age Matter?
More Girls Are Playing Football. Is That Progress? - The New York Times
Skin in the Game: How to Choose a Football
Head Injuries & American Football - Ethics Unwrapped
I didn't let my son play tackle football: 6 things that happened as a result
CTE's Impacts On Young Football Players Can Be Chronic And Deadly – Rolling Stone
4 Things to Know Before Signing Up for Youth Football - HowTheyPlay
Youth sports: Why it's not safe for your child to play tackle football
When Can My Child Start To Play Tackle Football? - stack
Growing Youth Tackle Football, Coaching Resources, NFL Play Football
10 Life Skills Your Kids Will Learn Playing Sports
7 Reasons Why Kids Should Play Tackle Football
To coach elite child footballers, size – not age – matters, Sports science
Football: Time to ban tackling for kids under 14
Youth practice guidelines: Set limits on practice time, amount of full contact