100 Lost Treasures: True Stories of Stolen Artifacts, Mysterious Relics, and the Hunt for Lost Knowledge

History is vanishing one artifact at a time. Some of our most important historical and cultural treasures have been lost or stolen. Every year, dozens of treasures, from George Washington's teeth to the Apollo 11 moon landing tapes to even the iconic ground zero flag from the September 11 attacks, vanish from the shelves of famous museums, government archives and private collections. Here are the stories behind the greatest relics that have gone missing-and some thrilling tales of their recovery.