Re: Oz the Great and Powerful - Grading & Discussion
Disney paid MGM a fee to use the ruby slippers in Return to OZ, because they were MGM's intellectual property and had been created for the 1939 film (the slippers are silver in the books, and MGM wanted ruby ones to take advantage of the color). The books themselves were already in the public domain by 1985, when the film was made, and Disney had acquired rights to some of them.
"My dream is to eat candy and poop emeralds. I'm halfway successful."
Catbert, Evil Director of Human Resources