Plank discusses origin of '46' defense
Doug Plank Signed Jersey Inscribed 46 Defense (Beckett COA)
Rare Doug Plank jersey! Chicago Bears MENS large NEW! NFL Vintage throwback!!
Doug signed the jersey in black sharpie.
Doug Plank Chicago Bears signed jersey 46 Defense Beckett BAS
Fall Classic 2022 - Sports Memorabilia Auctions
Autographed Footballs – Forever Young Sports Cards
Kansas Pregame 2014 by Sixteen 60 Publishing Co. - Issuu