License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Josiah Boydell. Regnier Hansloe, an Anabaptist Minister, and His Wife (Cornelis Claesz Anslo and His Wife Aeltje Gerritsdr Schouten), May 1, 1781. The Metropolitan Museum of Art.