George Brett #600 Prices, 1983 Topps
George Brett Baseball Cards by Baseball Almanac
1975 Topps George Brett Rookie #228, Ungraded, Poor Condition
George Brett Trading Cards: Values, Tracking & Hot Deals
George Brett Baseball Card Price Guide – Sports Card Investor
20 Most Valuable Topps Baseball Rookie Cards Of The 1970s
George Brett #400 Prices, 1987 Topps
1982 Donruss Baseball Card Price Guide – Sports Card Investor
1976 Topps Baseball Cards: Most Valuable (Top Picks)
1990 Donruss George Brett 144 Values - MAVIN
MLB George Brett Signed Trading Cards, Collectible George Brett Signed Trading Cards
1975 Topps George Brett Rookie #228, Ungraded, Poor Condition
George Brett #700 Prices, 1988 Topps