Question: What American actor received a posthumous credit for a Walt Disney film that was released on January 29, 1959?
Sentence (from "Sleeping Beauty (1959 film)"): This was the last Disney adaptation of a fairy tale for some years because of its initial mixed critical reception and underperformance at the box office; the studio did not return to the genre until 30 years later, after Walt Disney died in 1966, with the release of "The Little Mermaid" (1989).
Relevant evidence: No