When Rita Williams was four, her mother died in a Denver boarding house. This death delivered Rita into the care of her aunt Daisy, a headstrong woman who had married the most prominent black landowner in Nebraska and spirited her sharecropping family out of the lynching South. They reinvented themselves as ranch hands and hunting guides out West. But one by one they slipped away, to death or to an easier existence elsewhere, leaving Rita as Daisy's...