A Football Life': Miami Dolphins 'unselfish' backfield trio powered their unbeaten record in 1972 NFL season
Former NFL QB Earl Morrall Dies; Key Part Of Dolphins And Colts Teams : The Two-Way : NPR
Shop Miami Dolphins 1972 Perfect Season 50th Anniversary Exclusive Limited Edition Football at Nikco Sports
Team History Pro Football Hall of Fame
1972 Miami Dolphins will remain NFL's only unbeaten team after Alex Smith does in 11-0 Steelers
Don Shula, players from 1972 Miami Dolphins gather to celebrate 40th anniversary of perfect season - ESPN
1972 Miami Dolphins: The inside story of the only perfect season in NFL history
Shula's legacy stretches beyond perfect season and football - The San Diego Union-Tribune
Former Auburn great Mike Kolen reflects on the perfect season with the Miami Dolphins
Undefeated - By Mike Freeman (paperback) : Target
A Football Life - Wikipedia
A Football Life': Miami Dolphins complete their perfect 1972 NFL season with Super Bowl VII win over Washington Redskins at Los Angeles Memorial Coliseum
Seventeen and Oh' Review: A Perfect Season for Dolphins - WSJ