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Land Snails from Northwestern MexicoHenry A. Pilsbry and T. D. A. Cockerell · Proceedings of the Academy of Natural Sciences of Philadelphia · 1925
A Pliocene Fauna from Western EcuadorHenry A. Pilsbry and Axel A. Olsson · Proceedings of the Academy of Natural Sciences of Philadelphia · 1941
Vitrinellidae of the Panamic Province: IIHenry A. Pilsbry and Axel A. Olsson · Proceedings of the Academy of Natural Sciences of Philadelphia · 1952
Patella KermadecensisHenry A. Pilsbry · Proceedings of the Academy of Natural Sciences of Philadelphia · 1894
Report of the Conchological SectionHenry A. Pilsbry · Proceedings of the Academy of Natural Sciences of Philadelphia · 1896
New Australian MollusksHenry A. Pilsbry · Proceedings of the Academy of Natural Sciences of Philadelphia · 1897
New Brazilian StreptaxidæHenry A. Pilsbry · Proceedings of the Academy of Natural Sciences of Philadelphia · 1897
Report of the Conchological SectionHenry A. Pilsbry · Proceedings of the Academy of Natural Sciences of Philadelphia · 1897
The American Camaenidae (Mollusca: Pulmonata)Charles B. Wurtz · Proceedings of the Academy of Natural Sciences of Philadelphia · 1955
On the CondylarthraProfessor Cope · Proceedings of the Academy of Natural Sciences of Philadelphia · 1882
On Uintatherium, Bathmodon and TriisodonE. D. Cope · Proceedings of the Academy of Natural Sciences of Philadelphia · 1882
On Supposed Tertiary AmmonitesJ. S. Newberry · Proceedings of the Academy of Natural Sciences of Philadelphia · 1882
Additions to the Library, 1887Proceedings of the Academy of Natural Sciences of Philadelphia · 1887
Notes on Peruvian TrochilidaeJames Bond · Proceedings of the Academy of Natural Sciences of Philadelphia · 1954
Notes on American MabuyasEmmett Reid Dunn · Proceedings of the Academy of Natural Sciences of Philadelphia · 1935
Fossil Vertebrates from FloridaDr. Leidy · Proceedings of the Academy of Natural Sciences of Philadelphia · 1889