| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1990 | 978-0-9618470-0-5 | The Art of Good Living | |
| '' | 978-0-9618470-1-2 | Christopher Hobbs | Echinacea: The Immune Herb |
| 1994 | 978-0-9618470-8-1 | Christopher Hobbs | Foundations of Health: Healing with Herbs & Foods (Herbs and Health Series) |