DEFIANCE, Ohio – Karl Kissner picked up a soot-covered cardboard box that had been under a wooden dollhouse in his grandfather’s attic. Taking a look inside, he saw hundreds of baseball cards bundled with twine. They were smaller than the ones he was used to seeing.

But some of the names were familiar: Hall of Famers Ty Cobb, Cy Young and Honus Wagner.

Then he put the box on a dresser and went back to digging through the attic.