The Wizard of Oz Pop-up Books Set of 4 Treasury Collection Vintage is a special edition box set of four pop-up books based on L. Frank Baum’s classic novel. Published in 1991 by Ottenheimer Books in the United States, these books bring the magical world of Oz to life with interactive pop-up elements. The set includes the titles: “The Wizard of Oz,” “The Land of Oz,” “Ozma and the Magic Key,” and “The Scarecrow of Oz,” making it a must-have for fans of the beloved franchise. With its nostalgic appeal and unique format, this collection is sure to delight readers of all ages.