This lot includes 12 vintage books from the popular Hardy boys series by Franklin W. Dixon. Each book is filled with action-packed adventures that will keep you on the edge of your seat. The books are perfect for any fan of mystery and suspense and are sure to provide hours of entertainment. The titles included in this lot are listed below.

- The Tower Treasure

- The House on the Cliff

- The Secret of the Old Mill

- The Missing Chums

- Hunting for Hidden Gold

- The Shore Road Mystery

- The Secret of the Caves

- The Mystery of Cabin Island

- The Great Airport Mystery

- What Happened at Midnight

- While the Clock Ticked

- Footprints Under the Window