Eighteenth Century Collections Online contains over 180,000 titles (200,000 volumes) and more than 32 million pages, making ECCO the premier and irreplaceable resource for eighteenth-century research. Users of ECCO Part I and Part II can full-text search the collection via an intuitive user interface. In addition, MARC record/metadata enhancements, a research guide section for undergraduates with contextual essays and chronology, an image gallery, and a key documents section facilitate discovery and study.