Clinton also carried with him seven draft chapters of his mother’s autobiography. At Thanksgiving, when Mrs. Kelley knew she had just months to live, she told friends, “I want Bill to finish it.” The president, who has become its editor, worked on the book during spare moments last week. After declining to play the sax at a stop in Brussels, Clinton, true to his mother’s spirit, rallied in Prague. During a pub crawl with Czech Republic President Vaclav Havel, he tootled two numbers on a borrowed sax while Havel banged a spoon on the table. Aides said it was a wonderfully cathartic evening for Clinton.