1980 Topps Baseball Checklist, Team Set Lists and Details
1986 Topps #610 Ron Guidry VG New York Yankees - Under the Radar
1980 Topps #207 J.R. Richard/Ron Guidry LL VG Houston Astros/New
Ron Guidry ARENA CLUB
All About the Ultra Scarce 1980 Topps Pepsi-Cola All-Stars
New York Yankees Sports Cards Values - GoCollect (new-york-yankees
Ron Guidry Trading Cards: Values, Tracking & Hot Deals
1980 Topps Baseball Card Checklist
Ron Guidry Trading Cards: Values, Tracking & Hot Deals
Ron Guidry Trading Cards: Values, Tracking & Hot Deals
CardCorner: 1986 Topps Pedro Guerrero