21. Circular to one of the trustees of the University of Pennsylvania Author(s): Barton, William P. C. (William Paul Crillon), 1786-1856 Publication: [Philadelphia? : s.n., 1825?] Subject(s): Education, MedicalBotanyCurriculumPhiladelphiaUniversity of Pennsylvania. Department of Medicine.
22. Elements of botany, or, Outlines of the natural history of vegetables: in two volumes Author(s): Barton, Benjamin Smith, 1766-1815 Publication: Philadelphia : Desilver, 1827 Subject(s): Botany
23. Notes on Dr. Barton's lectures on botany Author(s): Elmer, William, 1788-1836 Publication: Produced: 1809 Subject(s): Botany