Cotton Claudius B.iv, an illustrated Old English Hexateuch that is among the treasures of the British Library, contains one of the first extended projects of translation of the Bible in a European vernacular. Its over four hundred images make it one of the most extensively illustrated books to survive from the early Middle Ages and preserve evidence of the creativity of the Anglo-Saxon artist and his knowledge of other important early medieval picture cycles. In addition, the manuscript contains the earliest copy of Aelfric's Preface to Genesis, a work that discusses issues of translation and interpretation.