Books of Wonder is a well-known publisher of children's books. Among many other selections, the firm has released facsimile editions of the books of L. Frank Baum, and new editions of books by Ruth Plumly Thompson, John R. Neill, Jack Snow, and Eloise Jarvis McGraw.

During the 1990s Books of Wonder maintained a separate imprint called Emerald City Press, which was devoted to issuing new Oz books by contemporary authors.

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