50 years on, the 1972 Miami Dolphins' undefeated season remains undefeated, Miami Dolphins
Steelers-Dolphins Primetime Matchup Will Feature Celebration Of Perfect '72 Dolphins Team - Steelers Depot
214 1972 Nfl Playoffs Photos & High Res Pictures - Getty Images
Ranking the NFL's best playoff moments -- The Catch, Hail Mary and more - ESPN
NFL's only 'Perfect Season' reaches golden anniversary
Shop Miami Dolphins 1972 Perfect Season 50th Anniversary Exclusive Limited Edition Football at Nikco Sports
List of AFC champions - Wikipedia
How final undefeated NFL team has finished each season – NBC Sports Philadelphia
NFL 100 Greatest: 1972 Dolphins named best team in league history