Hardy Boys 01: The Tower Treasure
Franklin W. Dixon
Hardy Boys 02: The House on the Cliff
Franklin W. Dixon
The Secret of the Old Mill
Franklin W. Dixon
Hardy Boys 04: The Missing Chums
Franklin W. Dixon
Hardy Boys 05: Hunting for Hidden Gold
Franklin W. Dixon
Hardy Boys 06: The Shore Road Mystery
Franklin W. Dixon
Hardy Boys 07: The Secret of the Caves
Franklin W. Dixon
Hardy Boys 08: The Mystery of Cabin Island
Franklin W. Dixon
Hardy Boys 09: The Great Airport Mystery
Franklin W. Dixon
Hardy Boys 10: What Happened at Midnight
Franklin W. Dixon