17th Century Guide to Mixing Watercolors
Captivated by this 17th century guide on mixing watercolors by a Dutch author named A. Boogert. It’s a detailed manual on how to mix colors and change tones that was intended as a resource for the day’s artists and illustrators—but only one copy was ever made. It now lives in relative obscurity in a library in Aix-en-Provence.
via This is Colossal