Last month, the University’s Institute for Bioethics hosted a lecture by Dr. Jessica Dandona from the Minneapolis College of Art & Design about 19th-century flap anatomy books. While she was in Pittsburgh, she had some research time to review flap anatomy books from the Falk Library collection, which helped me identify some titles with these distinctive illustrations. Several of these books are on display near the Main Desk through December.
In these books, multiple layers of paper can make a 2-D book represent a 3-D object in an engaging way as users must fold back each layer to uncover the next image. It is difficult to create these layers, and it often requires a strong partnership between a talented artist and book printer. Heinrich Vogtherr the Elder is credited with the first use of layered flaps to show human anatomy in 1538. The idea for this format in early printed anatomies might have been related to sliding circular charts called “volvelles” that were used in astronomy and geometry books (Valeria and Rippa-Bonati, Animated Anatomies: The Human Body in Anatomical Texts from the 16th to 21st centuries).
In the Falk Library collection, the oldest books with flap illustrations were made for physicians, surgeons, and medical students. Our volumes on hernias and midwifery are particularly noteworthy for their detailed drawings and artistic coloring. George Spratt’s Obstetric Tables from 1848 is particularly interesting because the layers show progressive steps in a procedure instead of layers of anatomy. For example, one set of flaps shows the hand movements for treating an adhesion of the placenta. Other procedures show the correct use of obstetrical instruments or a Cesarean section operation.

