The Peace Palace Library is a collection of studies and references specializing in international law.
It received a financial donation of $1.5 million by Andrew Carnegie,[3] which made the construction of the Peace Palace possible.
The palace was built to accommodate the Permanent Court of Arbitration, but Carnegie insisted that room be made available also for a legal library.
A large part is searchable through the library's online catalogue, which also classifies book items.
In its classification the library tries to remain faithful, as much as possible, to the Catalogue de la bibliothèque du Palais de la paix, designed in 1916 by Elsa Oppenheim,[4] daughter of the international lawyer Jacques Oppenheim [nl].
In 2012 the Peace Palace Library and the Institute for Environmental Security began compiling a research database on the proposed Law of Ecocide.