Masolino da Panicale, The Archangel Gabriel, c. 1430, tempera on poplar panel, National Gallery of Art, Washington. https://dartabase.art/cite/nga/366

Fra Angelico, The Madonna of Humility, c. 1430, tempera on panel, National Gallery of Art, Washington. https://dartabase.art/cite/nga/5

Masolino da Panicale, The Virgin Annunciate, c. 1430, tempera (?) on panel, National Gallery of Art, Washington. https://dartabase.art/cite/nga/367