Treaty Index, HeinOnline World Treaty Library: single-search by keywords, dates, places, countries, etc., across several major treaty indexes and collections, including the Historical Treaty Index to Parry's Consolidated Treaty Series, Multilateral Treaty Calendar, Hein's U.S. Treaty Index, Martens, Rohn's World Treaty Index, UNTS, and LNTS.
National treaty sources of a party to the treaty are also a place to look for the text,
Citations, signatories, parties, status, subjects
United Nations & League of Nations Treaties
- International Legal Materials 1962-, American Society of International Law
Selected new treaties, laws, cases, etc. in international law. Also available in JSTOR, LexisAdvance and WestlawNext (1980-). Bluebook-preferred unofficial source.
- Martens Nouveau recueil général de traités: conventions et autres transactions remarquables...., 1761-1944
- CTS Consolidated Treaty Series, 1648-1919, Parry
Bilateral and multilateral treaties in their original languages; if original language is not English or French, most include either an English or French translation or a summary in English. Bluebook-suggested unofficial source.
- WorldLII International Treaties Collection
- The Avalon Project, Yale Law School, Lillian Goldman Library
Especially good for historical treaties.
- National treaty sources of a party to the treaty