| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Emblems of Honor: Patches and Insignia of the US Army from the Great War to the Early Cold War - Armor, Cavalry, Tank Destroyer, Constabulary | 978-0-9748204-0-8 (0-9748204-0-7) | 2005 |
H. Keller · K.k. · K. Keller · Kurt Keller