Small-mouthed Salamander (Ambystoma microstomum: 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.); Small-mouthed Salamander (Amblystoma microstomum: 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.); Porphyry Salamander (Amblystoma microstomum: 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); Texas Salamander (Amblystoma texanum: 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); Small-mouthed Salamander (Ambystoma microstomum: 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.); Small-mouthed Salamander (Ambystoma microstomum: 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.); Small-headed Salamander (Chondrotus microstomus: 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); Porphyry Salamander (Chondrotus microstomus: Beyer, George. 1900. Louisana herpetology. Proceedings of the Louisiana Society of Naturalists 1897-1899():24-46); Texan Salamander (Ambystoma texanum: Strecker, John K. 1922. An annotated catalogue of the amphibians and reptiles of Bexar County, Texas. Bulletin Scientific Society of San Antonio (4):1-31); Texas Salamander (Ambystoma texanum: Smith, Hobart M. 1934. The Amphibians of Kansas. American Midland Naturalist 15(4):377-527); Narrow-mouthed Salamander (Ambystoma texanum: Smith, Hobart M. 1934. The Amphibians of Kansas. American Midland Naturalist 15(4):377-527); Small-mouthed Salamander (Ambystoma texanum: Schmidt, Karl P. 1953. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.); Smallmouth Salamander (Ambystoma texanum: Collins, Joseph T., James E. Huheey, James L. Knight, and Hobart M. Smith. 1978. Standard common and current scientific names for North American amphibians and reptiles. Herpetological Circulars (7):36);