| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Brain Snacks: Good-for-Your-Soul Puzzles and Activities for Adults | 978-0-7369-7341-0 (0-7369-7341-9) | 2018 |
| Happy, Healthy Brain: Engage Your Brain with Puzzles, Mazes, Word Searches, and More! | 978-0-7369-7763-0 (0-7369-7763-5) | 2019 |
| Mind Delights: Good-for-Your-Soul Puzzles and Activities for Adults | 978-0-7369-7187-4 (0-7369-7187-4) | 2017 |