| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1968 | 978-0-900076-00-8 | Celia Green | Lucid Dreams |
| '' | 978-0-900076-01-5 | Celia Green | Out-of-the-Body Experiences (Proceedings of the Institute of Psychophysical Research) |
| 1977 | 978-0-900076-04-6 | Charles McCreery | Psychical Phenomena and the Physical World |
| '' | 978-0-900076-06-0 | Celia Green | The Decline and Fall of Science |
| 1989 | 978-0-900076-09-1 | Celia Green · Charles McCreery | Apparitions |