Glinda of Oz

Glinda of Oz, published in 1920, is the fourteenth and final book in the original Land of Oz series by L. Frank Baum. In this installment, Dorothy and Ozma embark on a journey to prevent a brewing war between two mysterious races, the Flatheads and the Skeezers, in an unexplored region of Oz. This book is notable for being the last work by Baum before his death, although the series continued with other authors afterward.