Is a 1987 topps Barry bonds error card worth a lot of money? - Quora
Pat Borders Cards Trading Card Database
1992 Studio Baseball Card Checklist
Pat Borders Cards Trading Card Database
Design – Page 2 – SABR's Baseball Cards Research Committee
Pat Borders Cards Trading Card Database
1990 Topps Baseball Card Checklist
Pat Borders
Pat Borders Cards Trading Card Database
1982 St. Louis Cardinals Roster by Baseball Almanac