Série de EditoraTreasure Chests
- The American Indians: Mystery and Tradition on the Great Plains, to Unlock and Discover (Treasure Chests) de Fiona Macdonald
- The Ancient Aztecs: Secrets of a Lost Civilization, to Unlock and Discover (Treasure Chest) de Fiona Macdonald
- Ancient Greece: Treasure Chests : 4,000 Years of History and Mythology to Unlock and Discover (Treasure Chests (Games)) de Lynn Brittany
- Ancient Rome: More Than 2,500 Years of History and Adventure to Unlock and Discover (Treasure Chests) de Lynn Brittney