Gregg Jefferies Baseball Cards
Gregg Jefferies Price List - Supercollector Catalog
1990 Fleer Toys R US MVPs Variation checklist - Supercollector Catalog
1990 Topps Gregg Jefferies Values - MAVIN
Gregg Jefferies Price List - Supercollector Catalog
Topps Gregg Jefferies Baseball Trading Cards
1992 O-Pee-Chee Premier #95 Gregg Jefferies - NM-MT
1989 Topps Gregg Jefferies Values - MAVIN
The rule of thirds and '08 Stadium Club
1988 score Gregg Jefferies Values - MAVIN