- The Osteology of the Reptiles
- The Law of Contracts; Volume 1
- Water Reptiles of the Past and Present
- Synopsis of the Families and Genera of North American Diptera, Exclusive of the Genera of the Nematocera and Muscidae: With Bibliography and New Species, 1878-88 (Classic Reprint)
- North American Plesiosaurs: Volume Fieldiana, Geology, Vol.2, No.1