Allan Gurganus. Photo: © Roger Haile. Courtesy of W. W. Norton. In his Art of Fiction interview, Allan Gurganus preaches the power of the sentence. But for me, the real satisfaction to be had from the newly released Uncollected Stories of Allan Gurganus comes from the layers: a shrewd grad student’s thrifting trip becomes the story of a portrait, which is actually the story of a tragic moment in a small town’s history; a local news report becomes a firsthand account of the incident told by a police officer to his tape recorder. (In fact, local news reporters are more than once a way o...