An undated drawing by Hermann Beehle, scanned from the book La Beautee Insensee on the Prinzhorn Collection at University of Heidelberg, published by Palais Des Beaux-Arts De Charleroi, 1995. Hans Prinzhorn was a German psychiatrist and art historian, and an assistant at the Psychiatric Institute at the clinic of University of Heidelberg where he collected art by mentally ill patients.