Caspar Friedrich Wolff (1734—1794)
F. Anting, an 18th century artist, picture digitalised by <a href="//commons.wikimedia.org/wiki/User:Alexei_Kouprianov" title="User:Alexei Kouprianov">Alexei Kouprianov</a>
A reproduction of the 18c picture in C. F. Wolff <i>Objecta meditationum pro theoria monstrorum.</i> Sumptibus Acad. Sci. URSS, Typis Nauka, Leninopoli, MCMLXXIII (1973).