The Medinet Madi Library comes of age in this landmark volume as one of the 20th century’s major finds of religious manuscripts. Discovered in Egypt’s Fayum region in 1929, these Coptic codices contain a cross-section of the sacred literature of the Manichaean religion. Early work on the collection in the 1930s was cut short by the ravages of the second world war. Recent decades have brought multiple new editorial projects, on which this volume offers a comprehensive set of status reports, as well as individual studies on aspects of the Manichaean religion informed by the library’s contents.