"Glinda of Oz" by L. Frank Baum is a children's fantasy novel published in 1920. The fourteenth and final book in Baum's original Oz series follows Princess Ozma and Dorothy as they journey to a remote corner of Oz to prevent war between the Flatheads and Skeezers. When their peace mission fails and they become trapped at the bottom of a lake on a magically submerged island, Glinda must rally Dorothy's friends and fellow magicians to mount a daring rescue operation.