| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Zombies 2015 Wall Calendar: The Year of Infection | 978-0-7893-2859-5 (0-7893-2859-3) | 2014 |
| Zombies 2016 Wall Calendar: The Year of Infection | 978-0-7893-3010-9 (0-7893-3010-5) | 2015 |
| Zombies 2017 Wall Calendar: The Year of Infection | 978-0-7893-3208-0 (0-7893-3208-6) | 2016 |
(D-R) · D. Robert · D. T. · Dr. Robert · R. T. · Robert T. · Robert Twombly