- EbookThe Mystery of the Night ExplorersMary Adrian
- EbookThe Tugboat MysteryMary Adrian
- EbookThe Fireball MysteryMary Adrian
- EbookThe Mystery of the Dinosaur BonesMary Adrian
- EbookThe Kite MysteryMary Adrian
- EbookThe Uranium MysteryMary Adrian
- EbookThe Indian Horse MysteryMary Adrian
- EbookThe Indian Horse MysteryMary Adrian
- EbookThe Rare Stamp MysteryMary Adrian