This book treats the alphabet scribes in Mesopotamia in the Late Babylonian period (6th-5th centuries BCE). Bloch defends the understanding of the term sēpiru as a designation of alphabet scribes, discusses the functions of sēpiru professionals in Babylonia, and discusses their ethnic origins, with special attention to the participation of Judeans in Babylonia in this profession. The monograph includes translations of over 100 Late Babylonian economic, legal, and administrative documents.