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..
Return to Oz
Return to Oz is a 1985 fantasy film directed and written by Walter Murch, co-written by Gill Dennis and produced by Paul Maslansky. It stars Nicol Williamson, Jean Marsh, Piper Laurie, and Fairuza Balk as Dorothy Gale in her first screen role. The film is an unofficial sequel to the 1939 Metro-Goldwyn-Mayer (MGM) film "The Wizard of Oz," and is based on L. Frank Baum's Oz novels, mainly "The Marvelous Land of Oz" (1904) and "Ozma of Oz" (1907). In the plot, Dorothy returns to the Land of Oz to find it has been overthrown by the villainous Nome King, and must restore it with her new friends Tik-Tok, Jack Pumpkinhead, and Princess Ozma.