| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2008 | 978-0-9817123-3-8 | Paul Hutchins | The Secret Doorway: Beyond Imagination |
| 2009 | 978-0-9817123-4-5 | Paul Hutchins | The Secret Doorway: Beyond Imagination |
| 2012 | 978-0-9817123-5-2 | '' | Hubble Reveals Creation: By an Awe-Inspiring Power |