HRAF Archaeology is an online database with information on the prehistory of the world. This database, modeled after eHRAF World Cultures, is unique in that the information is organized into archaeological traditions and the text is numerically subject-indexed according to HRAF’s modified Outline of Cultural Materials (OCM). This comprehensive subject retrieval system extends search capability well beyond keyword searching allowing for precise subject retrieval, even in foreign language texts. eHRAF Archaeology is organized by regions and archaeological traditions. Each tradition consists of a general summary and documents including books, journal articles, dissertations, and manuscripts.