The Hidden Prince of Oz The Hidden Prince of Oz The Hidden Prince of Oz is a novel written by Gina Wickwar and illustrated by Anna-Maria Cool. As its title indicates, the book is an entrant into the series of Oz books by L. Frank Baum and his many successors. The publication of the book was timed to coincide with the centennial of the original Oz book, "The Wonderful Wizard of Oz" (as was also true of Edward Einhorn's "Paradox in Oz" and Dave Hardenbrook's "The Unknown Witches of Oz"). It was the winner of the Club's Centennial book contest, which received over 100 entries
The Wonderful Wizard of Oz total of 10,000 copies, which quickly sold out. "The Wonderful Wizard of Oz" sold three million copies by the time it entered the public domain in 1956. The book was published by George M. Hill Company. Its first edition had a printing of 10,000 copies and was sold in advance of the publication date of September 1, 1900. On May 17, 1900, the first copy of the book came off the press; Baum assembled it by hand and presented it to his sister Mary Louise Baum Brewster. The public saw the book for the first time at a book fair