| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Eye of the Phoenix: Mysterious Visions and Secrets in the American Southwest | 978-1-931882-80-4 (1-931882-80-0) | 2008 |
| The Orion Zone: Ancient Star Cities of the American Southwest | 978-1-931882-65-1 (1-931882-65-7) | 2007 |