Tom Seaver – Society for American Baseball Research
1969–1980 – SABR's Baseball Cards Research Committee
Media Guide, PDF, Baltimore Orioles
1974 Topps Baseball Cards Checklist, Set Info, Key Cards, Boxes
1974 Topps Baseball Cards Checklist, Set Info, Key Cards, Boxes
Dick Allen Hall of Fame: 1975 Topps Traded Project: Boog Powell
1969–1980 – SABR's Baseball Cards Research Committee
Cards That Never Were: Topps All-Star Misses: 1969 AL Infield
A look back at 1962 Topps
RC Collectibles
Calaméo - 2017 November