| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Adult Coloring Books Bloom'n Critters 48 Grayscale Coloring Pages: Beautiful grayscale images of flowers with animals, insects, bunnies, kittens, ... hummingbirds, puppies | 978-1-7241-3029-7 (1-7241-3029-3) | 2018 |
| Adult Coloring Books Christmas Fun 47 Grayscale Coloring Pages: Beautiful grayscale images of Winter Christmas holiday scenes, Santa, reindeer, elves, ... tree lights | 978-1-7241-2939-0 (1-7241-2939-2) | 2018 |