The ARC Catalog includes open-access resources: peer-reviewed digital projects produced and evaluated by field-specific specialists.  It combines these with proprietary materials, including journals and books from JSTOR and ProjectMuse, as well as rare book catalog records from the best collections in a given field, including the English Short Title Catalog and the North American Imprints Program.  The catalog also includes metadata and full text from Gale-Cengage Learning’s Eighteenth-Century Collections Online, and metadata and full text from ProQuest’s Early English Books Online.  Full text has been provided by the Text Creation Partnership, and more is coming from the Mellon-funded Early Modern OCR Project (emop.tamu.edu).  Proprietary and open-access educational materials are fully represented in the ARC Catalog.