License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Samuel Brookes. An introduction to the study of conchology : including observations on the Linnæan genera, and the arrangement of M. Lamarck, a glossary, and a table of English names / by Samuel Brookes, 1815. The Metropolitan Museum of Art.