Saint Mary (the Blessed Virgin) with the Christ Child and Saint John the Baptist. Engraving by L.C. Ruotte after G.F. Penni.

Licence: Public Domain Mark

Credit: Saint Mary (the Blessed Virgin) with the Christ Child and Saint John the Baptist. Engraving by L.C. Ruotte after G.F. Penni. Wellcome Collection. Source: Wellcome Collection.