Iohann van Calcar by Maximilian FranckJan van Calcar is assumed to have been the illustrator of Vesalius's Fabrica which contained many intricately detailed drawings of human dissections, often in allegorical poses.
Jan Steven van Calcar (Italian: Giovanni da Calcar, Latin: Ioannes Stephanus Calcarensis) (c. 1499–1546) was a German-born Italian painter.