Don Shula, the winningest coach in pro football history, has died at age 90
Perfect Memories: A '72 Dolphins 50th anniversary celebration
Miami Dolphins - Wikipedia
An Understudy Helped Make the Dolphins 17-0 - The New York Times
LE 1972 Miami Dolphins Throwback Full-Size Authentic On-Field Helmet Team-Signed by (40) with Bob Griese, Dick Anderson, Bob Heinz, Charlie Babb (Mounted Memories Hologram)
Earl Morrall, who started nine games at QB for the '72 Miami Dolphins, dies at 79 – New York Daily News
4 Earl Morrall Leads '72 Dolphins, Top 10 Player Comebacks
Stories You Should Know: 1972-73 Miami Dolphins – A Sip of Sports
4 Earl Morrall Leads '72 Dolphins, Top 10 Player Comebacks