Based on a wealth of family papers, period images, and popular literature, this is the first book devoted to the broad history of sibling relations in America. Illuminating the evolution of the modern family system, Siblings shows how brothers and sisters have helped each other in the face of the dramatic political, economic, and cultural changes of the eighteenth and nineteenth centuries. As Hemphill demonstrates, siblings function across all races as humanity's shock-absorbers as well as valued kin and keepers of memory.