Design for Corner of a Cove (recto); Designs for a Ceiling (?) (verso)

Anonymous, Italian, Piedmontese, 18th century · 1700–1780 · Pen and dark brown ink, over leadpoint or graphite, with ruled construction; framing outlines in pen and brown ink, over lead point or graphite (recto); graphite or leadpoint (verso)

From the collection of The Metropolitan Museum of Art. Free to download, adapt and use — no permission needed.