Calaméo - Buckeye Sports Bulletin September 24, 2015
Orion Magazine - State of the Species
The Safety First Club, by W. T. Nichols—A Project Gutenberg eBook
At 66, former Bears safety Doug Plank has no regrets about his ferocious playing style - Chicago Sun-Times
Chicago Bears Gary Fencik and Doug Plank Talk Concussions and the NFL
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Ramblings of a retired teacher
A Hit Man On and Off the Field, How Doug Plank Found Success
5. Doug Plank - Ten Toughest Bears - ESPN
ᑭᖇO ᖴOOTᗷᗩᒪᒪ ᒍOᑌᖇᑎᗩᒪ 🏈 on X: Doug Plank, the number behind the great Bears' defense of the 80s / X