License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jacques Callot. La Mère et ses Trois Enfans (The Mother and her Three Children), from "Les Gueux suite appelée aussi Les Mendiants, Les Baroni, ou Les Barons" (The Beggars, also called the Barons), ca. 1623. The Metropolitan Museum of Art.