License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jeremias Wachsmuth. Various Designs for Rocaille Ornaments, plate 2 from "Fortsezung von unterschielichen Auszierungen zu allerleij nüzlich anzuwenden", printed ca. 1750–56. The Metropolitan Museum of Art.