Here are two images that may seem incongruous, but I’m about to link them. First, driving into Ellendale Sunday afternoon, we espy, at the corner of Main & 281, a sandwich sign on wheels - the kind they use for posting notice of a ball game upcoming on a summer night. The sign reads, “Book Fair at the Opera House / 2:00-5:00 Today / Free and Open to the Public.” Second, and here I’m getting a little professor-wonky, I’m going to cite a book I make my graduate students read, by the historian