Did you know that coloring isn't just for kids anymore? Skip to Article. ... Happy National Coloring Book Day: Adults are finding solace inside the lines. Updated: Jul. 31, 2015, 3:08 p.m.

The genre has been around for at least four decades–the assiduously low-cost press Dover Books has been making them since 1970–but Basford’s success made it a phenomenon.

Coloring books are no longer just for the kids. In fact, adult coloring books are all the rage right now. And while researchers and art therapists alike have touted the calming benefits for over a ...

Dover Publications has been producing adult-aimed coloring books since the 1970s, according to Ken Katzman, the company’s vice president of marketing. But it wasn’t until recently that sales ...