At the time of Marcus Duprees birth, when Deep South racism was about to crest and shatter against the Civil Rights Movement, Willie Morris journeyed north in a circular transit peculiar to southern writers. His memoir of those years, "North Toward Home," became a modern classic. In "The Courting of Marcus Dupree" he turned again home to Mississippi to write about the small town of Philadelphia and its favorite son, a black high-school quarterback...