UCF Research Guides: Treaties and International Agreements: LexisNexis Academic

U.S. Treaties on Lexis (1776+)

"full-text ratified and unratified treaties and international agreements, where the United States is a party or signatory. This includes not only treaties signed by the President with the advice and consent of the US Senate, but also international agreements from the U.S. Government. Documents are obtained directly from the U.S. Department of State and the U.S. Senate, as well as authoritative U.S. government publications, including:

Treaty Documents: Treaties transmitted to the Senate for consideration, usually including transmittal messages from the President and the Secretary of State.
Slip Documents: Treaties and international agreements released by the US Department of State, but not yet printed in TIAS.
Treaties and Other International Acts Series (T.I.A.S) from 1985
US Treaties and Other International Agreements (U.S.T.) 1949-1984
Bevan's Treaties and Other International Agreements 1776-1949

U.S. Treaties on Lexis (1776+)

Tax Analysts Worldwide Tax Treaties

Tax Analysts Worldwide Tax Treaties Combined Files 1828+

"the most complete collection of international tax treaties available. Besides the more than 4,400 tax treaties, amending protocols, and similar documents, Worldwide Tax Treaties features legislative history of U.S. tax treaties, administrative documents, and treaty news and analysis from Tax Analysts' Tax Notes International magazine." See also individual Tax Analysts files:

Tax Publications & Treaties (1984+)
Worldwide Tax Treaties (1828+)
Worldwide Tax Treaties Administrative Assistance Treaties (1922+)
Worldwide Tax Treaties Case Law (1890+)
Worldwide Tax Treaties Defense Treaties (1943+)
Worldwide Tax Treaties Estate & Gift Tax Treaties (1872+)
Worldwide Tax Treaties In Force (1910+)
Worldwide Tax Treaties Income Tax Treaties (1872+)
Worldwide Tax Treaties Integrated Treaties (1950+)
Worldwide Tax Treaties Model Convention Documents (1923+)
Worldwide Tax Treaties Model Tax Treaties (1943+)
Worldwide Tax Treaties Other Tax Treaties (1828+)
Worldwide Tax Treaties Reimbursement Treaties (1978+)
Worldwide Tax Treaties Social Security Agreements (1957+)
Worldwide Tax Treaties Tax Treaty News (1992+)
Worldwide Tax Treaties Transportation Treaties (1922+)

LexisNexis Academic -- Other Treaty Resources

Basic Documents of International Economic Law (BDIEL)
1991-1998, 2003+
"includes selected documents concerning the regulation of international trade, finance and foreign investment; the protection of intellectual property rights; regional economic organizations; instruments governing private commercial transactions, international litigation and arbitration; transportation; and taxation."
EUR-Lex EU Law Database: Treaties
1951+
"covers treaties establishing the European Communities, treaties amending or supplementing the founding treaties and the accession treaties of new member states. Also included are agreements and other legal acts resulting from external relations maintained by the European Communities and by member states."
International Legal Materials (ILM)
1962+
"include the full texts of important treaties and agreements, judicial and arbitral decisions, national legislation, international organizations resolutions and other documents."
Treaties & Agreements from ILM (1975+)
Native American People Treaties, Ratified & Unratified
1787-1883
"contains the full-text of all treaties, ratified and unratified."
USCS - International Conventions
current
"contains International Agreements from the United States Code Service. The Agreements selected for inclusion in the United States Code Service generally relate to intellectual property matters or civil litigation procedural matters. The United States is a party to all agreements included in this file." Browse using the Sources tab to view individual conventions.