License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jacob Gottlieb Thelot. Design for the Base of a Crucifix, plate 2 from "Neü inventierte Crucifix Stöcke", printed ca. 1750–56. The Metropolitan Museum of Art.