Perseus Beheading Medusa (recto); Studies of a Child and Ornament Sketches (verso)

Annibale Carracci · 1560–1609 · Pen and brown ink, brush and brown wash, over black chalk or charcoal, scribbles in a darker brown ink at upper right (recto); pen and brown ink, brush and brown wash (verso)

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