The Library, with a collection of more than 7,250 books, also includes a substantial collection of periodicals, papers related to workshops, seminars and conferences, as well as the Trust's own publications. There are approximately 50 periodicals on display, most of which are received in exchange for the LST Review.

Special collections include the Sam Kadirgamar Collection, acquired in 1991, consisting of a substantial number of legal texts, Indian, English, South African and Sri Lankan Law Reports and Cases. The Canada Section, donated to the Trust by the Canadian International Development Agency (CIDA), is a collection of the Dominian Law Reports and the Osgoode Hall Law Journal. The Library also holds US Law Reports (such as Corpus Juris Secundum and US Supreme Court Reporter), along with the Indian Supreme Court cases, Sri Lankan publications including New Law Reports, Legislative Enactments, Sri Lanka Law Reports and Acts of Parliament are also available.

The library collection includes:

Constitutional Law, Administrative Law, Tax Law, Industrial Law, Criminal Law, Family Law, Social Sciences, Economics, Political Science, Health and Human Rights, Human Rights, Conflict resolution, Transitional Justice and International Trade; Legislative Enactments of Sri Lanka, Sri Lanka Law Reports, Acts of Sri Lanka, Fundamental Rights Decisions, All England Law Reports, All India Reports, Indian Supreme Court Reports and Case Reports from foreign jurisdictions.

The Library collection is organised under the PURNA: Windows based integrated Library System. A major aim of the Trust is to update the Library to one of the premier research law libraries in Sri Lanka.

The library is open Monday to Friday from 9.00 am to 5.00 pm and photocopy services are available to users of the library subject to copyright laws. It is closed on Saturday,Sunday and on mercantile holidays.