Thomas Willis, Cerebri anatome: cui accessit nervorum descriptio et usus.
The Anatomy of the Brain with a Description of the Nerves and their Function (1664) by the British physician Thomas Willis (1621-1675) is one of the older items in the Monro Collection, and was an extremely valuable resource on the nervous system for the Monros. This illustration of the veins and arteries without the body showing is exquisitely artful and organic. This is the first edition.
Thomas Willis, Cerebri anatome: cui accessit nervorum descriptio et usus. London: James Flesher, Joseph Martyn and James Allestry, 1664.