The Oz Series Volume Two: Dorothy and the Wizard in Oz, The Road to Oz, and The Emerald City of OzL. Frank Baum
The Oz Series Volume One: The Wonderful Wizard of Oz, The Marvelous Land of Oz, and Ozma of OzL. Frank Baum
The Oz Series Volume Four: The Lost Princess of Oz, The Tin Woodman of Oz, The Magic of Oz, and Glinda of OzL. Frank Baum5
The Oz Series Volume Three: The Patchwork Girl of Oz, Tik-Tok of Oz, and Rinkitink in OzL. Frank Baum