Part of the series 'What do historians of mathematics do?'
" Over the last four centuries a huge amount of mathematics has been published. Most of it has, however, had little or no influence. By way of contrast, some mathematics, although unpublished in its time, has had great influence. My hope is to illustrate this with discussion of manuscript sources and resources that have survived from Thomas Harriot (c.1560--1621), Isaac Newton (1642--1727) and Évariste Galois (1811--1832)."
- Special Seminar