Includes all U.S. Treaties and Agreements, every published U.S. Supreme Court decision as it appears in the official U.S. Reports, U.S. Federal Register Library, U.S. Treaties, legal classics, and more.
A guide to treaties to which the US is a part, US bilateral treaties, and treaties to which the US in not a part. Also has a limited subject index of treaties.
Wikipedia - Chronological list of selected treaties since 1300 BC to the present as well as few pending treaties; often, significant countries are listed as parties.