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GALE Student Resources (search "Spanish")
Informe Academico (proporciona acceso a peridicos y revistas especializadas de lengua espanola y portuguesa. La base de datos ofrece una amplia gama de contenidos sobre America Latina)
History Reference Center collects full-text articles from Magazines, Academic Journals, Reference Books and more. (you may want to limit your search to Reference Sources... how would you do that?)
Don't forget to "expand your Research Topic" if you have one, and try other
eLibrary is a good choice for general background on a topic, as well as current news and periodicals, and Primary documents.