Mel Lyle

• The mystery of the flying skeleton
• The mystery of the haunted skyscraper
• The mystery of the million-dollar penny
• The mystery of the burning ocean
• The Mystery of the Burning Ocean (A Power Boys Adventure, No. 3)
• The Mystery of the Double Kidnapping
• A Power Boys Adventure The Mystery of the Double Kidnapping (A Power Boys Adventure)
• The Mystery of the Million-Dollar Penny (A Power Boys Adventure, No. 4)
• The mystery of the flying skeleton (A Power boys adventure)
• The Mystery of the Haunted Skyscraper (A Power Boys Adventure, No. 1)
• The Mystery of the Vanishing Lady (A Power Boys Adventure, No. 6)