1972 Miami Dolphins' 50-year anniversary: Five interesting facts about the NFL's only perfect season
17 facts about 17-0 Super Bowl VII champion Miami Dolphins - Los Angeles Times
1972 Dolphins remain only perfect team in NFL's 100 years: Here's every team's best unbeaten start
Miami Dolphins complete perfect NFL season.
17 facts about 17-0 Super Bowl VII champion Miami Dolphins - Los Angeles Times
Shop Miami Dolphins 1972 Perfect Season 50th Anniversary Exclusive Limited Edition Football at Nikco Sports
NFL on FOX - There's only been ONE season where fewer undefeated teams headed into Week 4 1972, when the Miami Dolphins had a perfect season.
Miami Dolphins complete perfect NFL season.
The Perfect Season': 1972 Miami Dolphins
NFL on Twitter: Only one team in NFL history has ever completed a perfect season: The 1972 @MiamiDolphins. 50 years later, @cfrelund breaks down the numbers to show us just how difficult
Remember the 1972 Dolphins' Perfect NFL Season
17 facts about 17-0 Super Bowl VII champion Miami Dolphins - Los Angeles Times
Celebrating 50-Year Anniversary, Perfect Season Miami Dolphins Get Better With Time – OutKick