| title | ISBN-13 | year of publication |
|---|---|---|
| George Adamski - A Herald for the Space Brothers | 978-90-815495-2-3 | 2012 |
| George Adamski - A Herald for the Space Brothers | 978-90-815495-1-6 | 2010 |
| Here to Help: UFOs and the Space Brothers | 978-90-815495-0-9 | 2011 |
| Priorities for a Planet in Transition - The Space Brothers' Case for Justice and Freedom | 978-90-815495-4-7 | 2015 |