The material contained here derives from a wide variety of printed and manuscript sources, chosen to give some idea of the rich diversity of evidence available to the historian of English medicine and its place in society during the fourteenth, fifteenth, and early sixteenth centuries. Latin and French have been translated into modern English, while vernacular texts have been slightly modified, and obsolete or difficult words explained. Middle English has otherwise been retained to give the past an authentic voice and to emphasize the similarities as well as the differences between the experience of modern readers and that of the inhabitants of late medieval England