Most Popular Books
- The Permo-Carbonniferous red Beds of North America and Their Vertebrate Fauna
- History of the Pelycosauria, with a Description of the Genus Dimetrodon, Cope: Transactions, American Philosophical Society (Vol. 20, Part 1) (Transactions of the American Philosophical Society)
- Description of the Skull of a New Form of Phytosaur
