The stock of graphic material includes panoramic and landscape drawings from travelling researchers of the 19th and 20th centuries; among them are water colours which served the geologists Alphons Stübel and Wilhelm Reiss as the pattern for their work  "Das Todtenfeld von Ancón in Perú"  ("The Ancón Field of the Dead in Perú") (Berlin 1880–87). The depiction of an Inca burial site, comprised of several hundred sheets, is impressive in the diversity of its detail and the brilliance of the drawing technique.