Color Me Stress-Free: Nearly 100 Coloring Templates to Unplug and Unwind (A Zen Coloring Book)
Color Me Happy: 100 Coloring Templates That Will Make You Smile (A Zen Coloring Book)
The Calm Coloring Book (Chartwell Coloring Books)
Colorama Coloring Book: Relaxation Series : Coloring Books For Adults, coloring books for adults relaxation, coloring book for grown ups (Colorama coloring book for relaxation) (Volume 4)