Louis Henkin (1917-2010) was a prominent figure in international human rights law and taught at Columbia Law School for over sixty years. Henkin published more than twenty books on constitutionalism, foreign policy, human rights, and international law, and served as an expert member of the United Nations' Human Rights Committee. The collection consists of 22 linear feet of Henkin's professional record, primarily from the last twenty-five years of his career, and focuses on his teaching activity, writings, and work for the United Nations.