| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2000 | 978-0-9533032-0-5 | Tony Parsons | The Open Secret |
| '' | 978-0-9533032-1-2 | Tony Parsons | As It Is: Dialogues on the Open Secret |
| 2003 | 978-0-9533032-2-9 | '' | All There Is |
| 2007 | 978-0-9533032-3-6 | '' | Nothing Being Everything: Dialogues from Meetings in Europe |