ACLS Humanities E-Book presents this volume as part of its Print-on-Demand (POD) program. This program offers a wide range of titles, across the humanities, that remain essential to research, writing and teaching. These titles are among the works chosen for digitization on our site in cooperation with ACLS's constituent learned societies for their continued importance to the scholarly community. Part of the original plan for ACLS Humanities E-Book was to investigate the varieties of publishing formats that could be derived from single sources for both its retrospective collection and its new XML titles. Deriving multiple formats is essential for both publisher and scholars in today's rapidly evolving scholarly communications environment, and creating a production model that takes into account the multiplicity of access possibilities and audience is an essential task of HEB.