Dover Publications created National Coloring Book Day in May 2015. Founded in 1941, Dover Publications leads the way. Dover released their first coloring book for adults, Antique Automobiles Coloring Book, in 1970. Dover now publishes Creative Haven®, a popular line of coloring books specially designed for adult colorists.
The Registrar at National Day Calendar declared the day to be observed annually on August 2nd.
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