Are Adult Coloring Books Really a Thing?

They seem to be sweeping the nation. But does anyone really use them?

Adult Coloring Books and My ADHD / OCD Mind

Why do they make separate coloring books for adults? - Quora

Chicago Fire Season 4 Episode 15 Review: Bad for the Soul - TV Fanatic

The 21 Best Adult Coloring Books You Can Buy

How adult coloring books became a million-dollar trend

100 Adult Coloring Book Ideas! - Mommy Evolution

13 Best Adult Coloring Books 2020 - Cool Adult Coloring Books to Buy

What can adult coloring books do for your health?

Online Colouring and Quiz Activities for Adults - Michael O'Mara Books

Are You Having a Relationship with an Adult Coloring Book?