EditorialFireworks in a Piazza, ca. 1618?23, Pen and brown ink, brush with gray and brown wash, over traces of lead point (?), sheet: 7 5/16 x 10 3/8 in. (18.6 x 26.4 cm), Drawings, Guercino (Giovanni Francesco Barbieri) (Italian, Cento 1591?1666 Bologna).