Overview: Two Castaic, CA teens found a 1915 ledger in their great grandfather's attic after he passed away. They found the names of more than Twenty-five years ago, a Roselle Park, NJ man bought an 1892 stock certificate because he suspected it was a fraud. The certificate bears the name Harlem Associated Heirs Title Company and includes a detailed map of Harlem. For the first time History Detectives teams up with Antiques Roadshow to trace the story behind two people in a fascinating photograph.