A few manuscripts have survived from the hand of Pieter van Schooten. [br]One of them is Hs441.[br]See [url=https://facsimile.ub.rug.nl/digital/collection/manuscripts/id/2372]UB_HS_441[/url][br][br]source list: [url=http://www.fransvanschooten.nl/Stevin.htm#literatuur]Sterctenbovwing Simon Stevin (www,fransvanschooten.nl)[/url]