Common Toad (Bufo americanus: Storer, D. H. 1839. Reports on the Ichthyology and Herpetology of Massachusetts. Reports on the Fishes, Reptiles and Birds of Massachusetts. Published Agreeably to an Order of the Legislature, by the Commissioners on the Zoological and Botanical Survey of the State. Dutton and Wentworth, State Printers, Boston, Massachusetts. pp.); Common American Toad (Bufo americanus: De Kay, James E. 1842. Zoology of New-York, or, The New-York Fauna: Comprising Detailed Descriptions of All the Animals Hitherto Observed within the State of New-York, with Brief Notices of those Occasionally Found Near its Borders, and Accompanied by Appropriate Illustrations. Volume 1, Part 3 (Reptiles and Amphibians). W. & A. White & J. Visscher, Albany, New York. pp.); American Toad (Bufo lentiginosus: 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.); American Toad (Bufo lentiginosus americanus: Yarrow, Henry C. 1876. List of Skeletons and Crania in the Section of Comparative Anatomy of the United States Army Medical Museum for use during the International Exhibition of 1876 in Connection with the Representation of the Medical Department U.S. Army. Army Medical Museum, Washington, D. C. pp.); American Toad (Bufo lentiginosus: 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.); Cope's Toad (Bufo copeii: 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); American Toad (Bufo lentiginosus americanus: 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); Common Toad (Bufo lentiginosus: 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); Common Toad (Bufo lentiginosus americanus: 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); American Toad (Bufo lentiginosus: Garman, H. 1892. A synopsis of the reptiles and amphibians of Illinois. Illinois Laboratory of Natural History Bulletin 3():215-403); Toad (Bufo lentiginosus: 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.); Northern Toad (Bufo lentiginosus americanus: 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); Common Toad (Bufo lentiginosus americanus: Beyer, George. 1900. Louisana herpetology. Proceedings of the Louisiana Society of Naturalists 1897-1899():24-46); Common Toad (Bufo lentiginosus: Fowler, Henry W. 1907. The amphibians and reptiles of New Jersey. MacCrellish and Quigley, Trenton, N. J.. 29-250pp.); Hop Toad (Bufo lentiginosus: Fowler, Henry W. 1907. The amphibians and reptiles of New Jersey. MacCrellish and Quigley, Trenton, N. J.. 29-250pp.); American Toad (Bufo americanus: Stejneger, Leonard and Thomas Barbour. 1917. A Checklist of North American Amphibians and Reptiles. Harvard University Press, Cambridge, Massachusetts. pp.); Hop Toad (: Wright, Anna Allen, and Alex Hazen Wright. 1933. Handbook of frogs and toads. The frogs and toads of the United States and Canada Comstock Publishing Associates, Ithaca, NY. xi+231pp.); Hudson Bay American Toad (: Wright, Anna Allen, and Alex Hazen Wright. 1933. Handbook of frogs and toads. The frogs and toads of the United States and Canada Comstock Publishing Associates, Ithaca, NY. xi+231pp.); American Toad (Bufo americanus americanus: Wright, Anna Allen, and Alex Hazen Wright. 1933. Handbook of frogs and toads. The frogs and toads of the United States and Canada Comstock Publishing Associates, Ithaca, NY. xi+231pp.); Northern Toad (Bufo americanus americanus: Wright, Anna Allen, and Alex Hazen Wright. 1933. Handbook of frogs and toads. The frogs and toads of the United States and Canada Comstock Publishing Associates, Ithaca, NY. xi+231pp.); Hop Toad (Bufo americanus americanus: Wright, Anna Allen, and Alex Hazen Wright. 1933. Handbook of frogs and toads. The frogs and toads of the United States and Canada Comstock Publishing Associates, Ithaca, NY. xi+231pp.); Hudson Bay American Toad (Bufo americanus copei: Wright, Anna Allen, and Alex Hazen Wright. 1933. Handbook of frogs and toads. The frogs and toads of the United States and Canada Comstock Publishing Associates, Ithaca, NY. xi+231pp.); Common American Toad (Bufo terrestris: Schmidt, Karl P. 1953. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.); American Toad (Bufo terrestris: Schmidt, Karl P. 1953. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.); American Toad (Bufo terrestris americanus: Schmidt, Karl P. 1953. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.); Hudson Bay Toad (Bufo terrestris copei: Schmidt, Karl P. 1953. A Check List of North American Amphibians and Reptiles. 6th Edition. University of Chicago Press, Chicago, Illinois. 280pp.); Eastern American Toad (Bufo americanus: 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); American Toad (Anaxyrus americanus: Frost, Darrel R., Roy W. McDiarmid, Joseph R. Mendelson III, and David M. Green. 2012. Anura - Frogs. Pages 11-22 in Society for the Study of Amphibians and Reptiles, Herpetological Circular No. 39. pp.); Eastern American Toad (Anaxyrus americanus americanus: Frost, Darrel R., Roy W. McDiarmid, Joseph R. Mendelson III, and David M. Green. 2012. Anura - Frogs. Pages 11-22 in Society for the Study of Amphibians and Reptiles, Herpetological Circular No. 39. pp.); Dwarf American Toad (Anaxyrus americanus charlesmithi: Frost, Darrel R., Roy W. McDiarmid, Joseph R. Mendelson III, and David M. Green. 2012. Anura - Frogs. Pages 11-22 in Society for the Study of Amphibians and Reptiles, Herpetological Circular No. 39. pp.);