Contagion - Historical Views of Diseases and Epidemics"Contagion: Historical Views of Diseases and Epidemics is a digital library collection that brings a unique set of resources from Harvard’s libraries to Internet users everywhere. Contagion is also a unique social–history resource for students of many ages and disciplines. These materials include digitized copies of books, serials, pamphlets, incunabula, and manuscripts—a total of more than 500,000 pages—many of which contain visual materials, such as plates, engravings, maps, charts, broadsides, and other illustrations."