Article: Reaction to the novel varied widely upon publication. Literary analysis of it is sparse, considering the number of copies sold and its widespread use in education. Author Mary McDonough Murphy, who collected individual impressions of To Kill a Mockingbird by several authors and public figures, calls the book, "an astonishing phenomenon". In 2006, British librarians ranked the book ahead of the Bible as one "every adult should read before they die". It was adapted into an Oscar-winning film in 1962 by director Robert Mulligan, with a screenplay by Horton Foote. Since 1990, a play based on the novel has been performed annually in Harper Lee's hometown of Monroeville, Alabama.

Question: Who wrote the screenplay for the 1962 film?
Horton Foote