His annotations, on teeth and skull, are made in his trademark mirror-writing, reading right to left. The drawing is made in pen and ink, with traces of black chalk evident. Where can I see it?

41 x 51 cm. (16.1 x 20.1 in.) ...

If pen and ink were not available, he had recourse to soot, coal dust, and coffee grounds. Huge made more than 4,000 drawings, which range from moody, dark landscapes to caricatures to ...