Larry McMurtry, a prolific writer who wrote mostly about the American West and who won a Pulitzer Prize for the sweeping novel "Lonesome Dove," died Thursday, according to a family spokesperson. He was 84. Amanda Lundberg confirmed the writer's death to NBC News on Friday. McMurtry died of heart failure at his home in Texas surrounded by his loved ones. Over half a century, McMurtry wrote almost 50 books, including novels, screenplays, essay collections and memoirs that were predominantly set in the West. Several of his early works became feature films, including Oscar winners "The Last Picture Show" and "Terms...