Who wrote this book set in the Land of Oz in which the shite kitten Eureka is introduced?
Eureka (Oz): Eureka is a white kitten found by Dorothy Gale's Uncle Henry, that he gives to her telling her that the name means "I have found it!" Eureka (Oz):  She is introduced in "Dorothy and the Wizard in Oz". Dorothy and the Wizard in Oz: Dorothy and the Wizard in Oz is the fourth book set in the Land of Oz written by L. Frank Baum and illustrated by John R. Neill.
L. Frank Baum