These databases will help you find historical articles on your tropics. Look for the 'cite' link when you find an article, and the database will cite the article in MLA style for you.
Offers the full text of articles (and accompanying images) from the New York Times (1851-2017). Every issue is digitally reproduced from cover to cover (including photos, graphics, advertisements, and all articles). The paper may be searched separately or jointly with the Wall Street Journal (1889-2004).
Comprehensive indexing and abstracting of articles in popular general-interest magazines published from 1892 to the present in the United States and Canada.
Contains full text access to nearly 3,200 magazines and journals covering academic areas of study including social sciences, humanities, education, computer sciences, engineering, language and linguistics, arts & literature, medical sciences, and ethnic studies. Part of EBSCOhost.
Contextual information on hundreds of the most significant people, events and topics in world history. Authoritative reference content with full-text magazines, academic journals, news articles, primary source documents, images, videos, audio files, and links to vetted websites.