Last month we told you about people who stumbled upon their fortune. If you haven’t found your own copy of the Declaration of Independence or a few thousand Ancient Roman coins, let me give you a push in the right direction with these tales of lost treasures that are just waiting for you to find them. 1. The Lying Dutchman? Arthur Flegenheimer, who went by the alias “Dutch Schultz,” was a New York mobster during the 1920s and ’30s known for his brutality and hard-nosed business tactics. By the time he was 33, Dutch had taken on the Mafia in...