![Page folded out three times to display 'the new portable orrery, invented and made by William Jones'](https://www.whipplelib.hps.cam.ac.uk/sites/www.whipplelib.hps.cam.ac.uk/files/styles/leading/public/orrery_edited.jpg?itok=Z9eVFTxL)
This directory indicates the locations of key HPS-related special collections (rare books/manuscripts/papers) of the University of Cambridge. Its purpose is to assist researchers in negotiating the many different ways in which Cambridge collections are described/catalogued (or not catalogued). Rather than an exhaustive catalogue, it simply provides a starting point for researchers, enabling them to browse the vast range of HPS-related library materials that exist in Cambridge.