Study for the Equestrian Monument to Francesco Sforza, early to mid 1480s, Pen and brown ink, light and dark brown wash; outlines of the horse and rider pricked for transfer. , 11 1/16 x 10 in. (28. 1 x 25. 4 cm), Drawings, Antonio Pollaiuolo (Italian, Florence ca. 1432?1498 Rome), This celebrated drawing was made by the Florentine painter, sculptor, engraver, and goldsmith Antonio Pollaiuolo. The sixteenth-century historian Giorgio Vasari, who owned the sheet and may have added the brown wash around the figures, seems to have described this drawing in his biography of Pollaiuolo (Lives of the Artists) of 1568