The Nine Tiny Piglets first appear in the fourth book set in the Land of Oz, written by L. Frank Baum, and illustrated by who?
The Nine Tiny Piglets:  They first appear in "Dorothy and the Wizard in Oz", owned by the Wizard of Oz and used for a trick in which he uses sleight of hand to make it appear as if he is pulling apart the piglets to make them appear, and pushing them together again to make them disappear. 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.
John R. Neill