1972 Miami Dolphins' 50-year anniversary: Five interesting facts about the NFL's only perfect season
A player-by-player look at the 1972 Dolphins and what they did after perfection – Sun Sentinel
Seven members of '72 Dolphins suffered brain injuries
Does football cause brain damage? 1972 Dolphins, current players live with fear
Broncos take historic beatdown in 70-20 loss to Dolphins: “Embarrassing
The Perfect Team: Part 1 - Prelude to Perfection - Miami Dolphins
Tua Tagovailoa's Head Injury Prompts Changes To NFL Concussion Protocols - WSJ
UNDEFEATED: Freeman, Mike: 9780062009838: : Books
Hall of Fame linebacker Nick Buoniconti, part of Dolphins' unbeaten 1972 squad, dies
The CTE Link Between Players from the 1972 Miami Dolphins - The New York Times
McDaniel era starts with a win, Dolphins top Patriots 20-7
At least seven 1972 Dolphins affected by cognitive impairment
Life story of Garo Yepremian, kicker for undefeated '72 Dolphins - Sports Illustrated
Does football cause brain damage? Check out the '72 Dolphins – The Morning Call
A look at the 1972 Dolphins roster, 50 years later