No. 1098.01 354
(Mütter Museum)
Sepia and black pen with sepia and blue ink washes on cold-pressed watercolor paper, 6 x 4 inches (15.24 x 10.16 cm)
Ink and ink wash drawing of specimen No. 1098.01 354, a fetal skull [Mütter Museum of the College of Physicians of Philadelphia].