HarperCollins · Mitchell Beazley
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Postcards: A Collector's Guide | 978-1-84000-190-7 (1-84000-190-9) | 2000 | |
| Serpent's Teeth: Story of Cadmus | 978-0-00-195755-8 (0-00-195755-4) | 1971 | Penelope Farmer |