The book is scheduled to be published on Monday, and Mr. Marable had been looking forward to leading a vigorous public discussion of his ideas. But on Friday Mr. Marable, 60, died in a hospital in New York as a result of medical problems he thought he had overcome. Officials at Viking, which is publishing the book, said he was able to look at it before he died. But as his health wavered, they were scrambling to delay interviews, including an appearance on the “Today” show in which his findings would have finally been aired.
