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