Jan van Eyck, Lucca-Madonna, c. 1437, Mischtechnik auf Eichenholz, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/937 Jan van Eyck, The Annunciation, c. 1434/1436, oil on canvas transferred from panel, National Gallery of Art, Washington. https://dartabase.art/cite/nga/46