Sports memorabilia convention is the biggest show in Cleveland - ESPN

Red-hot hobby attracts massive crowd, making The National a huge success - Sports Collectors Digest

Future National Sports Collectors Convention sites announced - Sports Collectors Digest

Upper Deck Dominated the 2013 National Sports Collectors Convention

Great Lakes Collectors Convention

Big crowds and big deals from the show floor of The National - Sports Collectors Digest

ESPN: One Giant Leap for FANkind by Headline Books / Zoom Into Books - Issuu

Taking in the 30th annual National Sports Collectors Convention - ESPN

The Latest: 2 Madison Square Garden boxing cards called off

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