Other Serpent Effigy Mounds
This is just a collection of articles and sites which I've come across that mention other effigies. Any further info on them is welcomed.
Wisconsin serpent mound:
Peet, S.D. 1886. The serpent effigy in Wisconsin. American Antiquarian 8: 247-248.
Reisinger, M.E. 1934. The serpent effigy on Medicine Butte. Wisconsin Archaeologist 14: 23-24.
Kentucky serpent mounds:
Duffield, L.F. and E. Heffernan. 1974. Archaeological reconnaissance of the proposed Paintsville and Yatesville Reservoirs in Johnson, Morgan, and Lawrence Counties, Kentucky. Lexington, KY: University of Kentucky, Museum of Anthropology.
Kentucky Heritage Council. 1985. National Register of Historic Places Inventory - Nomination Form: 15MF355, Spratt Stoneworks. Frankfort, KY.
Minnesota serpent mound:
Williamson, A.W. 1897. The serpent effigy in Minnesota. American Antiquarian 19: 151-154.
South Dakota serpent mounds:
The Blood Run Site - serpent effigy was destroyed
Abbott, James T. A Re-evaluation of Boulderflow as a Relative Dating Technique for Superficial Boulder Features. Plains Anthropologist 33, no. 119 (1988): 113-118.
Helmick, John M. Stone Mounds and Serpent of Hughes County, South Dakota. Proceedings of the Davenport Academy of Natural Sciences 6, 1889-1897 (1897): 170-171.
Georgia Serpent Mound
Kelly, A.R. 1979. Hopewellian studies in American Archaeology: Hopewell after Twenty Years. In Hopewell Archaeology: The Chillicothe Conference, edited by D. Brose and N. Greber, pp. 1-2. Kent, OH: The Kent State University Press.
West Virginia Serpent Mound
Wilkins, G.R. 1981. A rock serpent mound in Logan County, West Virginia. Tennessee Anthropological Newsletter 6(4): 1-4.
Mexico
Copper Canyon, Sonora - serpent effigy mentioned in travel agency website
Canada
Serpent Mounds Park, Ontario - not a true serpent effigy
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