Treaties in Force (U.S. Department of State) (JX236.1929c, Level 4)
Published since 1964, this is an annual publication listing all treaties and other international agreements in force and of which the United States is a party. Part 1 lists bilateral treaties by country and includes subdivisions by subject. Part 2 lists multilateral treaties by subject. Electronic versions are available on the Department of State web page http://www.state.gov/s/l/treaty/treaties and HeinOnline (subscription access.)
A Guide to the United States Treaties in Force (JX236.5 G84, Level 4)
Published since 1982, this annual publication supplements Treaties in Force by providing additional access points. The Guide is also available on HeinOnline (subscription access.)
United States Treaty Index: 1776-1990 Consolidation and Current Treaty Index (JX236.5 C87, Level 4)
Edited by Igor I. Kavass, this is "a comprehensive index of all documented treaties and agreements entered into by the United States from 1776 through 1990." It has been updated by 1995 and 1998 revisions and is further updated by the Current Treaty Index that is issued twice each year. The Current Treaty Index is also available in the HeinOnline database (subscription access.)
Treaties Pending in the Senate (U.S. Dept. of State web page) http://www.state.gov/s/l/treaty/pending/. This is a list of treaties awaiting the advice and consent of the Senate. Pending treaties are listed chronologically with the oldest first. There are links to the full text of the treaties in PDF format. For research on older treaties the Congressional Index (J69 C6 Level 1) is a good resource. Volume 1 has a "Treaties" tab that can be used for locating summaries and status information on pending treaties. A subject index is included. The Library has volumes from the 88th Congress (1963-64) through the 110th Congress (2007-2008).
International Legal Materials (American Society of International Law) (Periodicals Stacks, Level 1)
This is a bi-monthly publication that contains a wide and well selected range of documents prior to publication in official sources. Included are treaties and agreements, judicial proceedings, legislation and regulations, and reports. Each issue includes tables of "recent actions regarding treaties to which the United States" is and is not a party. Electronic versions: Classic Lexis (Directory path: Area of Law ‑ By Topic/International Law/Treaties & International Agreements; WestlawNext – type ILM in the search box at the top of the home screen; JStor.org (subscription access); and HeinOnline (subscription access).
Treaties and Other International Acts Series (T.I.A.S.) (JX231 A341, Level 4)
This is the first official publication in slip form of all treaties and international executive agreements. The pamphlets are published somewhat chronologically with a lag time usually between four and six years. Electronic access is through the U.S. Dept. of State web page: http://www.state.gov/s/l/treaty/tias/index.htm (1996-2013) or HeinOnline where coverage is 1982 to the present (subscription access.)
United States Treaties and Other International Agreements (U.S.T.) (JX231 A34, Level 4)
Since 1950, the U.S. Department of State has published official bound volumes containing all treaties and international executive agreements. The set follows the numerical order of documents as first published in pamphlet form in T.I.A.S. The current lag time in publication is about ten years. Electronic access is via HeinOnline (subscription access.)
Charles I. Bevans, ed., Treaties and Other International Agreements of the United States of America 1776-1949 (JX236.1968 A5, Level 4)
This is the most comprehensive collection of pre-1950 treaties and agreements. Volume 13 is the general index. Available through HeinOnline (subscription access.)
Begin your search on WestlawNext (WLN) by typing the words you want to search in the search box at the top of the home page screen. A drop-down box will appear with a selection of databases.
Classic Lexis offers the “U.S. Treaties on Lexis” database (Directory path: Area of Law - By Topic > International Law > Treaties & International Agreements > U.S. Treaties on Lexis). Lexis also provides several subject-specific treaty databases, such as “Basic Documents of International Economic Law” (Directory path: Area of Law - By Topic > International Law > Treaties & International Agreements > Basic Documents of International Economic Law) and “Tax Analysts Worldwide Tax Treaties Combined Files” (Directory path: Area of Law - By Topic > International Law > Treaties & International Agreements > Tax Analysts Worldwide Tax Treaties Combined Files). If you are using Lexis Advance, type the word(s) you wish to search in the box at the top of the home page screen. If you type in treaties, a drop-down box will appear will a number of choices including US Treaties on Lexis, Tax Analysts Worldwide Tax Treaties and Treaties in Force.
Congress.gov also has a link to treaties at the bottom of the homepage. https://beta.congress.gov/