1991 Upper Deck New York Mets Baseball Card #156 Gregg Jefferies
Greg Jefferies: Late 1980's Mets Infielder (1987-1991)
Gregg Jefferies Checklist - Supercollector Catalog
Greg Jefferies: Late 1980's Mets Infielder (1987-1991)
Las mejores ofertas en New York Mets Jerseys de la MLB usada en partidos
Beckett baseball february 2017 by huong pham - Issuu
Donruss and Panini – SABR's Baseball Cards Research Committee
Greg Jefferies: Late 1980's Mets Infielder (1987-1991)
Gregg Jefferies Checklist - Supercollector Catalog