License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Joseph Swan. The escape of Mary, Queen of Scots from Loch Leven Castle (frontispiece, from "Mary, Queen of Scots: Her Persecutions, Sufferings, and Trials"), 1826. The Metropolitan Museum of Art.