| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Erinnerungen an Rudolf Steiner, Franz Brentano, Anton Bruckner, Fercher von Steinwand, Robert Hamerling | 978-3-907564-10-3 (3-907564-10-3) | 1992 | ||
| Hashish The Lost Legend: The First English Translation of a Great Oriental Romance | 978-1-934170-50-2 (1-934170-50-X) | 2014 | Stephen J. Gertz | |