When Russel B. Nye and Martin Gardner teamed up to bring out a new edition of The Wonderful Wizard of Oz, theirs was the first critical analysis of L. Frank Baum American classic.

The book opens with an essay by Nye, entitled An Appreciation, which is an overview of Baum's creative and imaginative genius. Nye explores the reasons why earlier critics virtually ignored the Oz stories. Gardner, in his essay, The Royal Historian of Oz, presents a brief biographical sketch, revealing little-known facts about this prolific writer.

The volume also contains the complete, original text of the Wonderful Wizard of Oz, along with many original illustrations by artist W. W. Denslow.