| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Bullfrog Grows Up | 978-0-437-33460-2 | 1978 | |
| Grenouillard, Gertrude et Justin Serpent | 978-2-211-04437-0 | 1989 | Byron Barton |
| Mrs. Piggery Snout | 978-0-06-021406-7 | 1977 | |
| Mrs. Piggery Snout | 978-0-06-021407-4 | 1977 | |
| The 300 Pound Cat | 978-0-03-059111-2 | 1981 | Skip Morrow |
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