| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1994 | 978-0-9521512-0-3 | Steuart Campbell | The UFO Mystery Solved: An Examination of UFO Reports and Their Explanation |
| 1996 | 978-0-9521512-1-0 | Steuart Campbell | The Rise and Fall of Jesus: The Ultimate Explanation for the Origin of Christianity |