| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| It's a Fruit, It's a Vegetable, It's a Pumpkin | 978-0-516-46039-0 (0-516-46039-0) | 1996 | Allan Fowler · Robert L. Hillerich |
| The Earth Is Mostly Ocean | 978-0-516-46038-3 (0-516-46038-2) | 1996 | Allan Fowler · Robert L. Hillerich |