License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Arthur Pond. A Collection of Etchings and Engravings in Imitation of Drawings from Various Old Masters, Being Facsimiles of Their Respective Performances, Chiefly by Arthur Pond, & Charles Knapton, London 1734 &c,, 1732–69. The Metropolitan Museum of Art.