| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Gardening with Stone: Using Stone Features to Add Mystery, Magic, and Meaning to Your Garden | 978-0-02-862134-0 (0-02-862134-4) | 1999 | Jan Kowalczewski Whitner · Jan Kowalczewski |
| Northwest Garden Style: Ideas, Designs, and Methods for the Creative Gardener | 978-1-57061-064-6 (1-57061-064-9) | 1996 | Jan Kowalczewski Whitner |