Courtesy of law library listservs, information about two sources of treaty information:

The electronic World Treaty Index is an updated, electronic version of Peter Rohn’s print source of the same name, the first and second editions of which are available on campus. The electronic index will cover more than 75,000 20th century treaties. It can be searched by country name, topic, signing date, and by the Correlates of War treaty code. 21st century treaties will be added in coming months. For additional information about the World Treaty Index, see postings on VoxPopuLII and govloop.

The World Treaty Index provides citations, but does not link to the full text of treaties. The World Legal Information Institute’s International Treaties Collection does include the full text of more than 60,000 treaties, including 30,000 from the United Nations Treaty Collection. The WorldLII International Treaties Collection allows Boolean searching of more than two dozen treaty databases found elsewhere on the WorldLII website and also lists treaties by country, topic and international organization.

The United Nations Treaty Collection is available online and in microfiche.