Ohio is not the first state you associate with Mark Twain. It's not the second, third, fourth, or fifth state you associate with him, given the claims made by Missouri, California, Nevada, New York and Connecticut. Still, Ohio does have many intriguing and important Twain connections. He gave lectures or readings from his works in fifteen Ohio cities. He planned on starting his married life in Cleveland, as part owner of a newspaper. And some of his...