| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| A Mountain Alphabet | Paperback | 978-0-88776-384-7 (0-88776-384-7) | 1996 | Margriet Ruurs |
| When We Go Camping | " | 978-0-88776-685-5 (0-88776-685-4) | 2004 | " |
| When We Go Camping | Hardcover | 978-0-88776-476-9 (0-88776-476-2) | 2001 | " |