- Listenly
- Public Library
- Project Gutenberg
- Publishers' catalogs — Pennsylvania -- Philadelphia
Publishers' catalogs — Pennsylvania -- Philadelphia — Audiobooks
Saunders' Books on Pathology, Physiology Histology, Embryology and Bacteriology
by W.B. Saunders Company
T. B. Peterson's List of Publications (1857)
by Pa.) T.B. Peterson & Brothers (Philadelphia
Catalogue of Practical and Scientific Books
by Henry Carey Baird & Co.
Catalogue of Practical & Scientific Books
by Henry Carey Baird & Co.