Brill's New Jacoby (BNJ) is a new edition of the 856 fragmentary historians that comprise F. Jacoby's monumental Die Fragmente der griechischen Historiker Parts I-III, with significant additions. Each author has a Greek text (updated from that of Jacoby where relevant); facing English translation; new, critical commentary (for the first time for authors 608-856, on which Jacoby did not write commentaries); a brief encyclopaedia-style entry about his life, works, importance, etc.; and a select bibliography. BNJ also includes several new authors and many fragments of existing authors that were either unknown to Jacoby or excluded by him. Jacoby's numbering system has been retained so that readers may also consult FGrH without having to refer to a concordance.