Ruth Plumly Thompson; L Frank Baum; John R Neill
|描述：||237 pages,  leaves of plates : illustrations ; 21 cm.|
|丛书名：||Wonderful Oz books, #21.|
|责任：||by Ruth Plumly Thompson ; founded on and continuing the famous Oz stories by L. Frank Baum ; with illustrations by John R. Neill.|
Unsuspectingly, Peter, a boy from Philadelphia, assists the wicked Gnome King in escaping from the island where he has been banished and who is now determined to reclaim his former kingdom and ravage Oz.