| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2005 | 978-0-9548399-0-1 | Roderick Gordon · Brian Williams | The Highfield Mole: The Circle in the Spiral: Bk. 1 |
| '' | 978-0-9548399-1-8 | Roderick Gordon · Brian Williams | The Highfield Mole: Bk. 1: The Circle in the Spiral |