HarperCollins · Littlehampton Book Services Ltd
| title | media type | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Golden Book of Lost Worlds Great Civilizations of | Hardcover | 978-1-111-18977-8 | 1962 | |
| Pickles and Jake | " | 978-0-437-31400-0 | 1977 | |
| Toad Hunt | " | 978-0-437-90048-7 | 1968 | |
| Toad Hunt | Library Binding | 978-0-06-021263-6 | 1967 | |
| Wolfie | Paperback | 978-0-437-90066-1 | 1970 | |
| Wolfie | Hardcover | 978-0-06-021261-2 | 1969 | Marc Simont |