1. Shell Author(s): Carpenter, William Benjamin, 1813-1885, author Publication: [London?] : [publisher not identified], 1848 Subject(s): Animal Shells -- cytologyCrustaceaEchinodermataMolluscaMicroscopy
2. Catalogue of the tertiary testacea of the United States Author(s): Lea, Henry Charles, 1825-1909 Publication: Philadelphia : Merrihew & Thompson, 1848 Subject(s): Mollusca