| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| 9 Worlds of Hex Magic: Interviews | 978-1-4929-4115-6 | 2013 | Hunter M. Yoder · Wyatt Kaldenberg · Robert Taylor · Jack Montgomery · Dennis Boyer · Adel Souto · Matthias Waggener |
| The Lion is Humbled: What If Germany Defeated Britain in 1940? | 978-0-595-32651-8 | 2004 | |
| Vrilology: The Secret Science of the Ancient Aryans | 978-0-595-38504-1 | 2006 | |
| Vril: The Life Force of the Gods | 978-1-4502-3694-2 | 2010 | |
| What If?: Alternative Historical Time Lines | 978-0-595-30139-3 | 2003 | |
| What If?-Two: More Alternative Historical Time Lines | 978-0-595-37449-6 | 2005 | |
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