Magazine Inserts Pricelist - Supercollector Catalog
Baseball Card Cameos Checklist - Supercollector Catalog
artiezillante – SABR's Baseball Cards Research Committee
Ken Griffey Jr Checklist - Supercollector Catalog
mike piazza Values - MAVIN
mike piazza Values - MAVIN
Mike Piazza Baseball Trading Card Database
jongree – SABR's Baseball Cards Research Committee
At Auction: #185/500 Produced - Mike Piazza 1998 Sports
Ken Griffey Jr Checklist - Supercollector Catalog
mike piazza Values - MAVIN