Kessinger Publishing, LLC · Nabu Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| A Christmas Book: Origin of the Christmas Tree, the Mistletoe, the Yule Log, and St. Nicholas | 978-1-120-11154-8 (1-120-11154-4) | 2009 |
| German Composition Based On Humorous Stories | 978-1-144-60074-5 (1-144-60074-X) | 2010 |