Ruth Plumly Thompson 
Giant Horse of Oz [EPUB ebook] 

In this classic fantasy adventure set in L. Frank Baum’s world of Oz, a prince embarks on a quest to save his homeland from a fire-breathing monster. In a remote corner of Munchkin Country lies Lake Orizon, home to the Ozure Isles. The five islands were once a peaceful place, but fire-breathing Quiberon, sent by the dreaded witch Mombi, has changed that. For twenty years, the beast has terrorized the islands. Now it’s threatening to wipe them out for good. The heroic Prince Philador embarks on a quest to get help from the Good Witch of the North to defeat Quiberon. Meanwhile, the royal soothsayer has a foolish plan of his own. Along the way, Philador catches a ride from High Boy, the friendly horse with telescopic legs and an umbrella tail. Together, they team up with the Scarecrow, little Trot from California, and Benny the talking statue from Boston, in hopes of vanquishing the terrible Quiberon once and for all . . .