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The Pan American Union dates back to the late 19th century, but became a reality as the Organization of American States (OAS) in 1948 when 21 countries, including the USA, founded the organization.
Pan American Union
PA 1.2: General Publications PA 1.6: Bulletin of the Pan American Union PA 1.52: Points of View PA 1.53: Panorama: A Record of Inter-American Cultural Events PA 1.95: Conservation in the Americas
This guide was based on work presented by Chris Brown at the University of Denver. For the original guide see http://libguides.du.edu/BrowseDocs. Additional information was provided by Donna Andriot's Guide to U.S. Government Publications 2009 edition.