Olivart Collection
The Harvard Law Library's collection of international law is probably the most comprehensive privately held collection of its kind in the world. The heart of this material is the 14,000 volumes acquired in 1911 from the private library of Ramón de Dalmau, Marqués de Olivart.
In addition to being a practicing lawyer and law professor, ambassador and Spain's Foreign Minister, Olivart was a distinguished scholar and bibliographer of international law. In 1905 he published an enlarged edition of the catalog of his own library, transforming it into a general bibliography of international law, which quickly became the standard for the field.