Andrea della Robbia, Madonna and Child with Cherubim, c. 1485, glazed terracotta, National Gallery of Art, Washington. https://dartabase.art/cite/nga/129

Andrea della Robbia, Saint Peter, c. 1900/1925 (figure); c. 1550 (framing garland), glazed terracotta, National Gallery of Art, Washington. https://dartabase.art/cite/nga/471

Andrea del Verrocchio, Giuliano de' Medici, c. 1475/1478, terracotta, National Gallery of Art, Washington. https://dartabase.art/cite/nga/134