| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Wise Trees 2019 Wall Calendar: Remarkable Living Monuments from Around the World | 978-1-4197-3072-6 (1-4197-3072-X) | 2018 | Diane Cook |
| Wise Trees 2020 Wall Calendar: Remarkable Living Monuments from Around the World | 978-1-4197-3073-3 (1-4197-3073-8) | 2019 | " |