Master of St. Sebastian, The Madonna and Child with Saint Anne, c. 1460, engraving on laid paper, National Gallery of Art, Washington. https://dartabase.art/cite/nga/8742

Master of St. Sebastian, Design for a Beaker and a Pax, c. 1480, engraving on laid paper, National Gallery of Art, Washington. https://dartabase.art/cite/nga/8741