Found this heatrock in a San Francisco thrift store a couple of years ago. The illustrations sprinkled throughout the book are OK - not nearly as robust and well-executed as the cover image. The artwork is by Ati Forberg, who illustrated a few other children's books throughout the 1960s.
Click for larger viewFans of Diplo might recognize this cover as being from the same series as the volume ganked for the cover artwork for he and Tripledouble's incredible psych / funk mix CD "AEIOU 2."