1983-Jul-06 Chicago (1982 Walcopex cachet)
1983-Sep-18 Elkhorn Wi - Walcopex Sta
1984-Aug-17 Carolina, PR - Walcopex - Clemente FDC
1989-Jun-10 Cooperstown NY
1989-Sept-17 Lake Geneva, Wisconsin - Walcopex Sta
A reference of baseball stamps, postmarks, first day and commemorative covers honoring the game of baseball.