ARCAIT - ARchive of Constitutions of Ancient ITaly - represents an interdisciplinary tool for information and bibliographical research, for study and analysis of the political and constitutional history of populations and communities of ancient Italy and Sicily in pre-Roman and Roman times (ca. 8th cent. BC - ca. 4th cent. AD). The three ARCAIT Archives contain, respectively, the modern scientific literature (so far over 9000 titles), selected epigraphic and literary evidence, and images (pictures, maps, drawings, etc.) related to the populations and communities of ancient Italy and Sicily and to specific historical-political and institutional topics.