United States Statutes at Large (KF50) - for treaties signed between 1776-1949 Vol. 7 - Indian Treaties 1778-1845 Vol. 8 - U.S. treaties with foreign nations, 1778-1845 use subsequent volumes of the Statutes to find treaties after 1845. There is a subject and country index in each volume. International Agreements are included beginning with vol. 47 (1931/32). Vol.64, pt.3, p.B1107 contains a cumulative index for 1789-1949.
HeinOnline UT Libraries database Search the "Treaties and Agreements Library" for international treaties to which the United States is a signatory.
Treaties and International Agreements Online Current, comprehensive text for over 17,000 bi-lateral and multi-lateral treaties and international agreements in over 40 topical categories. TIAO is the most up-to-date source for U.S treaties.
World Treaty Index 1945-1999 (beta) WTI provides citations to sources for full texts of multilateral and bilateral treaties.
The FLARE Index to Treaties (FIT) A fully searchable database of international treaties and conventions provided by the Institute of Advanced Legal Studies. Contains over 2,000 of the most significant multilateral treaties from 1353 onwards and a number bilateral treaties signed between 1353 and 1815.