Everybody knows that one of Johnny Cash’s malevolent alter egos shot a man in Reno, just to watch him die, but it’s less frequently remembered that another of his gritty creations was overtaken by the authorities — after snorting cocaine and shooting his unfaithful woman — down in Juarez, Mexico. (He made a good run but he run too slow.) And few probably take much time to note that the namesake of El Paso’s…

“The man who does not read good books has no advantage over the man who cannot read them,” Mark Twain’s saying goes. And according to a study put out by the University of Wisconsin at Whitewater, D.C.’s got plenty of people who read the good books, despite the fact that 37 percent of D.C. adults read at or below a third grade level. The study, which examines how residents of the United States’ largest 79…