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..
Wizards (Asimov anthology)
Wizards is an anthology of themed fantasy and science fiction short stories on the subject of wizards edited by Isaac Asimov, Martin H. Greenberg and Charles G. Waugh. The first volume in their Isaac Asimov's Magical Worlds of Fantasy series, it was first published in paperback by Signet/New American Library in October 1983. It was later gathered together with "Witches", the second book in the series, into the omnibus hardcover collection "Isaac Asimov's Magical Worlds of Fantasy: Witches & Wizards" (1985).