| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Grail Seeker's Companion: A Guide to the Grail Quest in the Aquarian Age | 978-1-870450-49-2 (1-870450-49-3) | 2004 | John Matthews |
M. Green · Marian Green · Marion Grein · Maryemma Graham · Maureen Green · Miriam Garron