"On the Confounding of Nassa Trivittata Say and Nassa Peralta," G.D. Harris; photostat of "A Reprint of Paleontological Writings of Thomas Say," with introduction by G.D. Harris, 1891, Box: 5, Folder: 17. Gilbert Harris papers, 14-5-4663. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/1932710 Accessed August 28, 2026.