- Malone, Marianne, Sixty-eight rooms adventure, 4
- The secret of the key, Marianne Malone ; illustrations by Greg Call
- Stealing magic, a sixty-eight rooms adventure, Marianne Malone
- The pirate's coin, a Sixty-eight rooms adventure, by Marianne Malone ; illustrated by Greg Call
- The sixty-eight rooms, Marianne Malone
- The sixty-eight rooms, Marianne Malone