Finding U.S. Treaties
The authoritative source on U.S. treaties is Treaties in Force, an annual publication by the U.S. Dept. of State. A print copy is in the Law Library at call# KZ235 .T7. It has two parts: Part 1 covers bilateral treaties (organized alphabetically by the non-U.S. party, then subject), and Part 2 covers multilateral agreements (organized alphabetically by subject). Information includes the date of entry into force, any amendments, citations to the text of the treaty, and the designated depositary. The depositary is the nation or organization that keeps the official text of the treaty, so it should be the text used in research.
Finding Treaties Where the U.S. is Not a Party
If the U.S. is not a party, a treaty will not be listed in Treaties in Force. Here are a few options for locating non-U.S. treaties:
The Hague Conventions
The Hague Conference on Private International Law (http://www.hcch.net/index_en.php) has conventions that are grouped into three categories, linked below. The Conventions are designed to enable cooperation between legal systems for private (non-state) matters such as international adoption and commercial transactions.
Locating the Texts of Treaties/International Agreements
If you know the identity of the depositary, you can find the treaty text at that nation or organization's website. If you find a treaty title and its citation, you can find the publication on HeinOnline's Treaties and Agreements Library, linked below. Here are some treaty publication citations and their titles:
Parts of a Treaty
When researching treaties, there are parts to look for in addition to the actual text: