The Learning Channel; Saturday, September 3, 10 p.m. (Eastern): Great Books: Huckleberry Finn; Great Books rafts down the Mississippi to explore why _Huckleberry Finn_ remains a timeless classic--and why it was banned in places when it was first published, 110 years ago. This look at the backdrop against which Mark Twain's classic novel was written draws parallels between events in the book and 19th-century American life; 60 minutes. Note: The Learning Channel crew was at the Mark Twain Memorial during the October 1993 conference, "Book Banning in America."