License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Thomas Sully. Seated Woman Holding Baby; Ionic Porch and Balustrade, Three Fleeting Figures (from Rubens Massacre of Innocents? Or Allegory of War) (from Sketchbook), 1810–20. The Metropolitan Museum of Art.