| Andy Sandler's All Sports Auctions |
| Auction of Champions |
| Bagger's Auctions |
| Brockelman Auctions |
| Christie’s Sports Memorabilia |
| Classic Auctions |
| Clean Sweep Auctions |
| Collect Auctions |
| EAC Gallery |
| Fanatics Collect |
| Goldin Auctions |
| Graham Budd Auctions/Sotheby's |
| Grey Flannel |
| Heritage Auctions |
| Huggins & Scott |
| Hunt Auctions |
| Iconic Auctions |
| Infinite Auctions |
| Inside The Park |
| J&B Sports Auctions |
| Kevin Savage Cards |
| Leland's |
| Love of The Game |
| MEARS Online Auctions |
| MeiGray Auctions |
| Memorabilia Expert |
| Memory Lane |
| Mile High Card Co. |
| Mullock & Jones |
| Premier Auction Gallery |
| Pristine Auction |
| Robert Edwards |
| RR Auction |
| SCP Auctions |
| Sirius Sports Auctions |
| Small Traditions |
| Sotheby's |
| SportsCard Link |
| Sterling Sports Auctions |
| The Golf Auction |
| The Tennis Auction |
| Vintage Authentics |
| Wheatland Auction Services |
| Bonham's Boxing-Related |
| Christie's Sporting Art |
| Julien's Auctions |
