"Primary sources are original records created at the time historical events occurred or well after events in the form of memoirs and oral histories." This definition comes from a page entitled Using Primary Sources on the Web; peruse it for more information. There is also a little more information on Primary and Secondary sources on our main website.
Below are two major online collections of primary source materials for Latin American Studies. See the page Finding Primary Sources in ALICE to learn how to find many more primary sources in our collection.