50 years on, the 1972 Miami Dolphins' undefeated season remains undefeated, Miami Dolphins
Miami Dolphins celebrates 50 years of the only perfect team in NFL history with several of its legends
1972 Miami Dolphins perfect season will stand alone among NFL's unbeatens
1972 Miami Dolphins: The inside story of the only perfect season in NFL history
1972 Dolphins to celebrate 50th anniversary: Here's why Miami had to play in Pittsburgh in AFC Championship
NFL - Miami Dolphins. 1972. 17-0. The only NFL team to win the Super Bowl with a perfect season. (via NFL Throwback) #NFL100
1972 Miami Dolphins: The inside story of the only perfect season in NFL history
1972 Miami Dolphins season - Wikipedia
17 facts about 17-0 Super Bowl VII champion Miami Dolphins - Los Angeles Times