A Sandy Koufax rookie baseball card displayed by the Unclaimed Property Division of the Colorado State Treasurer at the State Capitol in Denver, Colorado, March 10, 2015. Credit: Craig F.

That was Seymour Stoll’s experience years ago when he drew a Sandy Koufax card at 14 years old. Inspired by that sense of pride, Stoll set out to collect the cards of every Jewish player in ...