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 Wonderful Wizard of Oz (1986 TV series)
The Wonderful Wizard of Oz, known in Japan as , is a Japanese anime television series adaptation based on four of the original Oz books by L. Frank Baum. In Japan, the series aired on TV Tokyo from 1986 to 1987. It consists of 52 episodes, which explain other parts of the Oz stories, including the events that happened after Dorothy returned home.