Copyright status of The Wizard of Oz and related works in the United States
"The Wonderful Wizard of Oz" was published in 1900, and was the first to enter the public domain in "1956". This allowed Reilly & Lee, the publisher of all the other Oz books (as well as Baum's other books) to issue their own edition of "The Wizard of Oz", which had previously been published by George M. Hill Company and later by the Bobbs Merill Company after Hill went bankrupt..
The Oz Kids
The Oz Kids is an American animated fantasy comedy-drama television series produced by Hyperion Animation based on "The Wizard of Oz", L. Frank Baum's classic children's novel, and its various sequels, and was first broadcast on September 14, 1996 on ABC.