http://nsarchive.gwu.edu/nsa/publications/DOC_readers/saread/saread.html
Overview
South Africa and the United States: The Declassified History, a new publication by the National Security Archive, presents a 350-page compendium of the most important previously secret U.S. documents on the policy decisions, internal debates, and sensitive multilateral negotiations that guided U.S. actions toward the southern African region from 1962 to the present.
The primary source materials in this volume are the result of more than six years of research and use of the Freedom of Information Act aimed at compelling the U.S. government to declassify and release information on the hidden history of relations between the United States and South Africa. Virtually all of these records are published here for the first time.