Origins and spread of bubonic plague.

Black Plague Web Directory
Provides links to general information and primary sources

History of the Black Death
Includes historical timeline and superstitious and scientific causes of the Plague

History of Western Civilisation - The Black Death
Includes origins, contemporary accounts and effects of the plague

Pestilence Tyme
Information on England during the plague of 1348-1350

Jobs in the Middle Ages
Illustrations of medieval people at work from a book by a German charitable foundation started in 1388. You can see all of the images from the book at the German website listed at the bottom of the page.