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1984 Topps 1983 Highlight (Steve Carlton/Gaylord Perry/Nolan Ryan)
1983 Topps Baseball Cards – 25 Most Valuable … PLUS Bonus Listings! – Wax Pack Gods
1980-81 Player Movement And 1981 Topps, Fleer and Donruss
The Year in Strange But True: Judge! Ohtani! And MLB's 20 most mind-blowing hitting, pitching feats - The Athletic
The Topps Archives: What Year Is it?
What Happened to the Players in the 1970 Kellogg's 3D Baseball Card Set? - HubPages
1980 Topps Overview Lifetime Topps project
Cards That Never Were: 1980 Topps Gaylord Perry