License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Philip Henry Delamotte. [Two Gentlemen Seated on the Grounds of the Palace; The Palace from the Rosary; Cascades and North End of Palace; General View of Gardens and Fountains], ca. 1859. The Metropolitan Museum of Art.