Glinda of Oz Mass Market Paperback – February 12, 1981 by L. Frank Baum (Author), John R. Neill (Illustrator)
 
Book 14 of L. Frank Baum's immortal OZ series, in which Ozma and Dorothy travel to an enchanted island to prevent an impending battle between the Skeezers and the Flatheads, but are instead imprisoned in the city just before the island is submerged.
 
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