Francis Mercury Van Helmont from Alphabet of Nature, 1657 Obersälzen
Van Helmont, Francis Mercury. 1675. Alphabeti veri naturalis hebraici... Obersälzen: A. Lichtenhaler.
Engraving by Franck, F.
Source library: BIU Santé Médecine, Paris, France. Image 01145.
This image is in the public domain.
The engraving is based on a self-portrait by Van Helmont.