L. Frank Baum 
Lost Princess of Oz 

In this classic children’s novel set in the Land of Oz, Dorothy and the Wizard embark on a journey to find their missing friend Princess Ozma.One morning in the Emerald City, Dorothy Gale awakens to discover a series of baffling disappearances. Glinda the Good’s Great Book of Records has vanished, along with her magical implements. The Wizard of Oz discovers that his black bag of magic is gone as well. Most distressing of all, however, is the disappearance of Princess Ozma herself. Organizing a series of search parties to find the princess, Dorothy and the Wizard—along with Dorothy’s good friend Trot and the young boy Button-Bright—set out on a perilous adventure through unknown regions of Oz. But they soon find themselves in the land of the powerful wizard Ugu, whose castle holds many dangers—and the secret to Ozma’s whereabouts.