| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Gray to Gorgeous: Cats Vol 1: A Grayscale Coloring Book for Grownups | 978-1-5232-1667-3 (1-5232-1667-0) | 2016 |
| Gray to Gorgeous: Dogs Vol 1: A Grayscale Coloring Book for Grownups | 978-1-5232-2978-9 (1-5232-2978-0) | 2016 |
| Gray to Gorgeous: Horses Volume 1: A Grayscale Coloring Book for Grown Ups | 978-1-5232-6103-1 (1-5232-6103-X) | 2016 |
E.H. · Eric Hamraoui · Eric Hanauer · Eric Henry · Erica Dawn Henry Miller · Erich Höhner · Erik Hemmer · Erika Hammer