This book provides a welcome departure from more traditional coloring books. But beware, the designs herein may boggle your mind, and confound your eyes; they are all visual illusions. Does the cube go in or out, is the line straight or curved? You'll have fun deciding which while coloring them at the same time. 32 designs.
Book Details:
Format: Paperback
Publication Date: 6/1/1973
Pages: 32
Reading Level: Age 9 and Up