Even Leila Dunbar (right), Antiques Roadshow appraiser, was overwhelmed by the collection. "It is the greatest archive that I have ever had at the Roadshow," she says. Meredith Nierman/WGBH hide caption

itoggle caption Meredith Nierman/WGBH

Two of the most valuable cards in the collection: Ty Cobb (left) and Honus "Hans" Wagner. Heritage Auctions hide caption

itoggle caption Heritage Auctions