Tip of the Cap – SABR's Baseball Cards Research Committee
1988 Topps Cloth Baseball Card Checklist
Braves Baseball Memories
Minnesota Twins History
1987 Donruss Baseball Card Checklist
Mark Grant Gallery Trading Card Database
Carlos Correa stars against former team as Twins beat Astros 6-2
Mark Grant Stats, Fantasy & News
1979 Topps Baseball Card Checklist
Mark Grant Baseball Cards
1972 Topps Baseball Card Checklist
Craig Lefferts Trades and Transactions by Baseball Almanac
Ron Perranoski – Society for American Baseball Research
1976 Topps Baseball Card Checklist