Cambridge Encyclopedia of Latin America and the Caribbean.
[F1406 .C36 1992 Main Reference]
A useful single volume encyclopedia, profusely illustrated. Organized into six broad sections: Physical environment, Economy, Peoples, History, Politics and Society, and Culture.
Coverage includes biographical profiles of important figures in politics, letters and the arts. Utilize the general index to locate entries on your topic. 2008 ed.
Encyclopedia of Latin American Politics. Edited by Diana Kapiszewski; Alexander Kazan, assistant editor. Westport, Conn.: Oryx Press, 2002.
[F1410 .E56 2001 Main Reference]
Arranged by country, with articles consisting of country profiles, an overview of the country and its history and encyclopedic entries on subjects and important political and literary figures. Excellent bibliographies of general works and electronic resources, followed by the same for each country.
Encyclopedia of the Cold War. Rudd Van Dijk, et. al. New York: Routledge, 2008. (2 vols.)
[D840 .E625 2008, Main Reference]
Try browsing by place name. Under Argentina, for example, there are several short essays related to Cold War era events. Topics covered include civil disobedience, labor movements, strikes, guerilla war, etc.
Encyclopedia of Human Rights. 5 vols. David P. Forsythe, ed. Oxford; New York: Oxford University Press, 2009.
[and in print: JC571 .E673 2009 Main Reference]
Historical Dictionary of United States-Latin American Relations. Joseph Smith, ed. Lanham, Md.: Scarecrow Press, 2007.
[F1418 .S638 2007 Main Stacks]
A Reference Guide to Latin American History. James D. Henderson, Helen Delpar, Maurice P. Brungardt, editors. Armonk, N.Y.: M.E. Sharpe, c2000.
[F1410 .R395 2000 Main Reference]
Presents a chronology of Latin American history and identifies key figures.
Schwartz, Richard Alan. The Cold War Reference Guide: A General History and Annotated Chronology with Selected Biographies. Jefferson, N.C. : McFarland, c1997. [D843 .S3365 1997 Main Stacks]
One of a number of guides, historical dictionaries and encyclopedias focused on the Cold War. Check shelves in Reference, in the vicinity of D839-D843.