Sky Island

From Author Wars - https://authorwars.com/publications/sky-island-434650.html

Overview:

Title: Sky Island
Author: L. Frank Baum
Year: 1970
Publisher: Reilly & Lee
Price: $4.95
Pages: 288
Binding: Hardcover
Type: Novel
Title Reference: Sky Island
Notes: Data from review in the Spring 1971 issue of The Baum Bugle and Bienvenue's The Book Collector's Guide to L. Frank Baum and Oz. Front and back jacket illustrations redrawn by Dick Martin from the original front and back panel (cover, not dust jacket) of the first edition.