"Another hot debate I remember I was in had to do with the identity of Shakespeare. No color was involved there; I just got intrigued over the Shakespearean dilemma. The King James translation of the Bible is considered the greatest piece of literature in English. … Well, if Shakespeare existed, he was then the top poet around. … If he existed, why didn’t King James use him? … In the prison debates I argued for the theory that King James himself was the real poet who used the nom de plume Shakespeare."
The Autobiography of Malcolm X
Of course, any book involving Alex Haley raises its own issues of authenticity.