| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| How to Be a Superhero 6 Copy Counter Display | 978-0-452-29098-3 (0-452-29098-8) | 2004 | |
| How to be a Superhero | 978-0-452-28575-0 (0-452-28575-5) | 2004 | |
| Opal: The Phenomenal Gemstone | 978-0-9790998-0-9 (0-9790998-0-3) | 2007 | Si & Ann Frazier · Janet & Paul Clifford · Jürgen Schütz · Andrew Cody · Wilson Cooper · Bob Farrar · Catherine Gaber |