License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Giuseppe Galli Bibiena. Half Elevation and Half Ground Plan for a Catafalque: Columns Supporting a Steeped Dome with two Obelisks Surmounted by Figure of Fame, 1696–1756. The Metropolitan Museum of Art.