| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2004 | 978-0-9538134-2-1 | John Pilbeam · David Hunt | A Sulco Gallery - Sulcorebutias in pictures, selected and annotated. |
| '' | 978-0-9538134-3-8 | T.D. Pennington · C. Reynel · A. Daza | Illustrated Guide to the Trees of Peru |
| 2006 | 978-0-9538134-4-5 | The New Cactus Lexicon, Complete 2 Volume Set | |