Jan Gaspard · Jean Gosebrink · John Gaspard · John Guaspari · Juan Gasparini
| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| MYSTERY OF ATLANTIS | 978-0-553-25073-2 (0-553-25073-6) | 1985 |
| Sail With Pirates Machine 4 | 978-0-553-23808-2 (0-553-23808-6) | 1984 |
| Secret of the Knights | 978-0-553-23601-9 (0-553-23601-6) | 1984 |