1969 Billy McCool Game Worn Inaugural Season San Diego Padres, Lot #81087
Billy McCool - Wikipedia
It's a Major League City or It Isn't: San Diego's Padres Step Up to the Big Leagues – Society for American Baseball Research
Notable deaths in 2003 – Sun Sentinel
Tim Jenkins – Page 4 – SABR's Baseball Cards Research Committee
1969 Topps Baseball Checklist, Team Set Lists, Variations and Key Details
San Diego Padres Memorabilia, Autographed & Signed Padres Collectibles
Autographed BILL MCCOOL San Diego Padres 1969 Topps Card - Main Line Autographs
Tim Jenkins – Page 4 – SABR's Baseball Cards Research Committee
1969 Topps Baseball Checklist, Set Info, Key Cards, Variations, Buying