The giant horse of Oz
Ruth Plumly Thompson
The Lost King of Oz
The Cowardly Lion of Oz
Kabumpo in Oz
The Gnome King of Oz
The Silver Princess in Oz
Ozoplaning with the Wizard of Oz
Grampa in Oz
The Wishing Horse of Oz
Captain Salt in Oz
Handy Mandy in Oz
The Royal Book of Oz / In which the Scarecrow goes to search ...
Ruth Plumly Thompson & L. Frank Baum