T. R. · Timothy R. · Timothy R. O'Donnell
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Harry Putter and the Chamber of Cheesecakes | 978-0-9825379-6-1 (0-9825379-6-4) | 2004 |
| Harry Putter and the Deathly Hairballs | 978-0-9825379-8-5 (0-9825379-8-0) | 2011 |
| Polydora | 978-0-9825379-1-6 (0-9825379-1-3) | 2010 |