DJD XXXII presents the first full critical edition of the Great Isaiah Scroll (1QIsa]a) and the Hebrew University Isaiah Scroll (1QIsa]b), which constitute almost 30% of all the preserved biblical material, in the styles of the DJD series. That is, whereas the photographs and transcriptions have been available since the 1950s, this volume provides a fresh transcription of all the known fragments, notes clarifying problematic readings, and the first comprehensive catalogue of the textual variants. It is not, and cannot be, a comprehensive analysis of all these highly influential manuscripts, on which innumerable studies have been published over the past half century. Part 1 contains the photographic plates (1QIsa]a in colour) with the transcriptions on facing pages for easy comparison. Part 2 contains the introductions, notes, and catalogue of variants. The main introduction narrates the discovery and early history of these two manuscripts.