The Introduction describes the distinctive character of Old Norse-Icelandic literature, arguing that in range, quality and originality this body of literature rivals anything produced elsewhere in the Middle Ages. Highlighting the enduring importance, influence and popularity of this unique corpus of literature, it sets out the rationale for a volume providing a comprehensive account of its history and development. It then outlines the reasons for organizing the chapters of this volume primarily by the time and place of their texts’ setting, rather than any putative order of composition, in order to emphasize the fundamental intertextuality of Old Norse-Icelandic literary genres and the diversity of genre, style and worldview which these texts encompass. After this, the contents and approach of each section of the History are introduced in turn.