Various small imprints · Waldorf Publishing
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Journey To The Jungle City: After: The New Earth II | 978-1-64136-969-5 (1-64136-969-8) | 2018 |
| The Age of Ice: Into the Black City | 978-0-692-27035-6 (0-692-27035-3) | 2014 |
K.M. · K. Müller · K. R. · Keith M. · Keith Mueller · R. M. · R. Müller