| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Crystal Connection: A Guidebook for Personal and Planetary Ascension | 978-0-06-250033-5 (0-06-250033-3) | 1987 | Randall N. Baer |
| Windows of Light: Using Quartz Crystals As Tools for Self-Transformation | 978-0-06-060325-0 (0-06-060325-9) | 1984 | " |