Heritage's Summer Sports Card event tops $9 million - Sports Collectors Digest
Mickey Mantle card breaks record, as sports memorabilia soar - WHYY
Charitybuzz's October 2021 Premiere Trading Card Auction - Sports Collectors Digest
Mickey Mantle Topps card joins exclusive million-dollar club
Robert Edward Auctions
Mickey Mantle - Sports Collectors Digest
1952 Topps Mickey Mantle Becomes Most Expensive Sports Memorabilia at $12.6 Million
Highest-known sale of any trading card brings $7.25 million
Mickey Mantle jersey, 1952 card top $9 million in Heritage Summer auction - Sports Collectors Digest
Heritage's SGC 9.5 1952 Topps Mickey Mantle - Blowout Cards Forums