One Unicorn written and illustrated by Gale Cooper. Published in 1981 by Elsevier – Dutton Publishing Co., Inc. First Edition in dust jacket. Nice copy, all pages are clean and secure to hinge. Yellow boards with cloth spine. A fantasy about a princess and a unicorn that grows up with her. About the author: GALE COOPER, is a Harvard educated, M.D. psychiatrist, who has written and illustrated other books on fantasy, animal anatomy, and human interest; and has written both fiction and non-fiction books on the Old West.