A seated female figure with bound mouth holding a palette and a mahl stick and supporting an oval male portrait, with a second female figure handing a pair of dividers to a boy, with other boys drawing and supporting a blank sheet. Red chalk drawing.

Licence: Public Domain Mark

Credit: A seated female figure with bound mouth holding a palette and a mahl stick and supporting an oval male portrait, with a second female figure handing a pair of dividers to a boy, with other boys drawing and supporting a blank sheet. Red chalk drawing. Wellcome Collection. Source: Wellcome Collection.