This is a sequel to the immensely useful Nag Hammadi Bibliography 1948-1969, which was the first volume to appear in the Nag Hammadi Studies series. The volume provides a complete integration of Supplements I-XXIV to the Bibliography as published in Novum Testamentum 1971-1997, with additions and corrections. In total the update contains over 6092 entries.Nag Hammadi and Gnostic studies continue to be of critical importance for the study of ancient religions in the Graeco-Roman world and for the study of the world of early Christianity, and the present bibliography provides an indispensable reference tool for work in these fields.