| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Paths of the Christian Mysteries: From Compostela to the New World | 978-1-902636-43-6 (1-902636-43-0) | 2003 | Manfred Schmidt-Brabant |
| The New Mysteries and the Wisdom of Christ | 978-1-902636-74-0 (1-902636-74-0) | 2005 | " |
| Thinkers, Saints, Heretics: Spiritual Paths of the Middle Ages | 978-1-902636-90-0 (1-902636-90-2) | 2007 | " |