George Francis Eaton 
U.S. Palaeontologist
Eaton G. F., 1903, The characters of Pteranodon. American Journal of Science. 16, 8286 & pls 67.
Eaton G. F., 1904, The characters of Pteranodon (Second Paper). American Journal of Science. 17, 318320 & pls 1920.
Eaton G. F., 1908, The skull of Pteranodon. Science 27, 254255.
Eaton G. F., 1910, Osteology of Pteranodon. Mem. Conn. Acad. Art. Sci. 2.pp.1-38.