| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Decoding the Mayan Marvels | 978-0-7910-8871-5 | 2005 | Katrina O'neill |
| In Search of the Egyptian Queen | 978-0-7910-8874-6 | 2006 | Katrina O'Neill · Lisa Thompson |
| Quest for the Cup | 978-0-7910-8876-0 | 2005 | Katrina O'neill · Lisa Thompson |
| Racing for the Birdman | 978-0-7910-8877-7 | 2005 | Katrina O'neill |
| Treasure Trackers | 978-0-7910-9082-4 | 2005 | Katrina O'Neill · Lisa Thompson |