| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Underground: The Disinformation Guide to Ancient Civilizations, Astonishing Archaeology and Hidden History | 978-1-932857-19-1 (1-932857-19-2) | 2005 |
| Under The Influence: The Disinformation Guide to Drugs | 978-1-932857-00-9 (1-932857-00-1) | 2004 |