Chicken Snake (Coluber fulviventer: Rafinesque, Constantine S. 1820. Annals of Nature or Annual Synopsis of New Genera and Species of Animals, Plants, and Discoveries in North America. First Annual Number, for 1820. Thomas Smith, Lexington, Kentucky. 16pp.); Pilot Snake (Coluber alleghaniensis: Jordan, David Starr. 1876. Manual of the Vertebrates of the Northern United States: Including the District East of the Mississippi River, and North of North Carolina and Tennessee, Exclusive of Marine Species. Jansen, McClurg, and Company, Chicago, Illinois.. 342pp.); Pilot Snake (Coluber obsoletus: Jordan, David S. 1878. Manual of the Vertebrates of the Northern United States: Including the District East of the Mississippi River, and North of North Carolina and Tennessee, Exclusive of Marine Species. Second Edition, Revised, and Enlarged. Jansen, McClurg & Company, Chicago. pp.); Racer (Coluber obsoletus: Jordan, David S. 1878. Manual of the Vertebrates of the Northern United States: Including the District East of the Mississippi River, and North of North Carolina and Tennessee, Exclusive of Marine Species. Second Edition, Revised, and Enlarged. Jansen, McClurg & Company, Chicago. pp.); Red-headed Coluber (Coluber obsoletus confinis: Yarrow, Henry C. 1882. Check list of North American Reptilia and Batrachia with catalogue of specimens in U. S. National Museum. Bulletin of the United States National Museum (24):1-249); Racer (Coluber obsoletus confinis: Davis, N. S., and Frank L. Rice. 1883. List of Batrachia and Reptilia of Illinois. Bulletin of the Chicago Academy of Sciences 1(3):25–32); Pilot Snake (Coluber obsoletus obsoletus: Davis, N. S., and Frank L. Rice. 1883. List of Batrachia and Reptilia of Illinois. Bulletin of the Chicago Academy of Sciences 1(3):25–32); Pilot Snake (Coluber obsoletus obsoletus: Davis, N. S. Jr. and Frank L. Rice. 1883. Descriptive catalogue of North American batrachia and reptilia, found east of Mississippi River. Illinois Natural History Survey Bulletin 1(5):71); Alleghany Black-snake (Coluber obsoletus: Hay, Oliver P. 1892. Batrachians and Reptiles of the State of Indiana. Pages 409-624 in 17th Annual Report of the Indiana Department of Geology and Natural Resources, William B. Burford, Printer and Binder, Indianapolis, Indiana. pp.); Pilot Snake (Elaphis obsoletus: Garman, H. 1892. A synopsis of the reptiles and amphibians of Illinois. Illinois Laboratory of Natural History Bulletin 3():215-403); Black Snake (Elaphis obsoletus: Garman, H. 1892. A synopsis of the reptiles and amphibians of Illinois. Illinois Laboratory of Natural History Bulletin 3():215-403); Pilot Snake (Coluber obsoletus: Rhoads, Samuel N. 1895. Contributions to the zoology of Tennessee. No. 1, Reptiles and amphibians. Proceedings of the Academy of Natural Sciences, Philadelphia 47():376-407); Black Chicken Snake (Coluber spiloides: Beyer, George. 1900. Louisana herpetology. Proceedings of the Louisiana Society of Naturalists 1897-1899():24-46); Red-headed Chicken Snake (Coluber spiloides: Beyer, George. 1900. Louisana herpetology. Proceedings of the Louisiana Society of Naturalists 1897-1899():24-46); Pilot Blacksnake (Elaphe obsoleta obsoleta: Stejneger, Leonard and Thomas Barbour. 1917. A Checklist of North American Amphibians and Reptiles. Harvard University Press, Cambridge, Massachusetts. pp.); Gray Rat Snake (Elaphe obsoleta confinis: Schmidt, Karl Peterson and D. D. Davis. 1941. Field Book of Snakes of the United States and Canada. C.P. Putnam and Sons, New York. 365pp.); Pilot Black Snake (Elaphe obsoleta obsoleta: Schmidt, Karl Peterson and D. D. Davis. 1941. Field Book of Snakes of the United States and Canada. C.P. Putnam and Sons, New York. 365pp.); Pink Rat Snake (Elaphe rosacea: Schmidt, Karl Peterson and D. D. Davis. 1941. Field Book of Snakes of the United States and Canada. C.P. Putnam and Sons, New York. 365pp.); Rat Snake (Elaphe obsoleta: Schmidt, Karl P. 1953. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.); Chicken Snake (Elaphe obsoleta: Schmidt, Karl P. 1953. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.); Pilot Black Snake (Elaphe obsoleta obsoleta: Schmidt, Karl P. 1953. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.); Black Chicken Snake (Elaphe obsoleta obsoleta: Schmidt, Karl P. 1953. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.); Blotched Chicken Snake (Elaphe obsoleta spiloides: Schmidt, Karl P. 1953. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.);