Henry Barclay Swete (1835-1917) published An Introduction to the Old Testament in Greek in 1900 as a manual to accompany his three-volume edition of the Septuagint (1887-1894) and to provide a guide through the vast corpus of Septuagint literature. Part 1 covers the textual history of the Septuagint, providing an in-depth analysis of its complex tradition, surveying the most important Greek witnesses and the earliest versions. Part 2 discusses the Alexandrian manuscript tradition, and covers the order and grouping of books, titles, comparison with the Hebrew Canon, and the textual divisions used in the manuscripts. Part 3 is concerned with the influence and use of the Septuagint in later works. An appendix contains the letter of pseudo-Aristeas with an introduction explaining the forgery. For over a century Swete’s work has been an indispensable tool for every scholar and student of the Septuagint.