Within two years of coming out in 1960, To Kill a Mockingbird had been translated into ten languages, won the Pulitzer Prize, and been made into an Oscar-winning film. It spent an astonishing 88 weeks on the American bestseller lists. But while acclaimed by critics it also attracted attention of a different kind. Like The Catcher in the Rye (1951), that other bestseller about childhood, Mockingbird was widely banned from local libraries and school...