License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Giovanni Battista Foggini. Studies for Coffee Urns, Arched-top Altars, and an Altar Project for the Baptistery of Florence Cathedral (recto); Studies for Chapels and Portals (verso), 1652–1725. The Metropolitan Museum of Art.