Many Moons is an American children's picture book written by James Thurber and illustrated by Louis Slobodkin. It was published by Harcourt, Brace & Company in 1943 and won the Caldecott Medal in 1944. The book centers around a young girl, Princess Lenore, who becomes ill, and only one thing will make her better: the Moon. The book was Thurber's first picture book. Wikipedia