The collection belongs to J. Gwyn Jeffreys (1809-1885), an English naturalist, who assembled a large collection of mollusk specimens which was purchased by the United States National Museum. Materials include miscellaneous papers and incoming correspondence concerning mollusks, together with sketches and plates.
Many of SIA's holdings are located off-site, and advance notice is recommended to consult a collection. Please email the SIA Reference Team at osiaref@si.edu.