The Oxford International Encyclopedia of Legal History is a comprehensive reference book edited by Stanley N. Katz that compares legal systems from around the world, both past and present. It covers legal traditions from Ancient Greek and Roman Law to Chinese, Islamic, and United States Law, as well as laws from Africa, Latin America, and South Asia. The encyclopedia delves into different categories of law like private law (contracts, civil procedures), public law (statutory, criminal), and constitutional law. It's a valuable resource for understanding how legal systems have evolved over time and across different cultures.