Doug Plank Signed 1999 Bears Fan Convention #31 (BGS Encapsulated)
Chicago Bears: Top 12 Players Who Have Been Overlooked for the Hall of Fame, News, Scores, Highlights, Stats, and Rumors
Scott Leonard - Myths and Religion
HS_Dec12AuctionGuide.. - Huggins & Scott
Posts – Heritage Place Museum
Doug Plank Gallery Trading Card Database
Doug Plank Chicago Bears Hits
OtherStock Online Auctions - 285 Lots
5. Doug Plank - Ten Toughest Bears - ESPN
Calaméo - Fall 2020 Auction