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Treaty Research Guide: Sources

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Recommended Sources for Treaty Research

U.S. Resources

World Treaty Collections

Historical Treaty Collections Online

Treaty Indexes

Treaty Indexes

Indices help researchers find treaties on a particular subject. The congress.gov treaty search allows researchers to search for U.S. treaties by topic using the subject filter. The HeinOnline World Treaty Library Index does the same for both U.S. & non-U.S. treaties. 

International Legal Materials (Unofficial Treaty Text)

This American Society of International Law (ASIL) publication covers significant developments in international law, including reports on cases from both international and domestic courts and arbitral bodies, treaties, resolutions and reports from intergovernmental organizations, and domestic legislation impacting international law and relations.  In many cases, ILM includes a full-text version of the primary document along with any editorial summary.

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