HarperCollins · Littlehampton Book Services Ltd
| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Cats Are Good Company: An I Can Read Book About Owning a Cat | Hardcover | 978-0-06-023676-2 | 1983 |
| Cats Are Good Company: An I Can Read Book about Owning a Cat | Paperback | 978-0-06-023677-9 | 1983 |
| Okay, Good Dog | " | 978-0-437-90129-3 | 1980 |
| Okay, Good Dog | Hardcover | 978-0-06-023672-4 | 1978 |
| Okay, Good Dog | Library Binding | 978-0-06-023673-1 | 1978 |