Список литературы:
1. Images of the Past, 5th edition. — New York: McGraw-Hill, 2008. — P. 274–277. — ISBN 978-0-07-340520-9
2. Fagan Brian M. Ancient North America. — Thames and Hudson, London.
3. Brose D. Hopewellian Archaeology. — Kent University Press. — P. 3–8.
4. Native American Government-Eastern Woodlands.
5. Hopewell-Ohio History Centrel.
6. Smith B.D. The Archaeology of the southeastern United States: from Dalton to de Soto, 10,500 to 500 BP.. — University of Georgia Press. — P. 1–92.
7. The Octagon Earthworks: A Neolithic Lunar Observatory.
8. Turner Christopher S.Archaeoastronomy Journal. — University Press of Kentucky, 1982. — Т. 5(n3). — P. -9.
9. Turner Christopher S. "An Astronomical Interpretation of the Hopeton Earthworks". — C.S.Turner, 1983.
10. Ancestral Art-Information on Hopewell Culture.
11. Power Susan Early Art of the Southeastern Indians-Feathered Serpents and Winged Beings. — University of Georgia Press. — ISBN 0820325015
12. Hopewell (1-400CE).
13. Power Susan Early Art of the Southeastern Indians-Feathered Serpents and Winged Beings. — University of Georgia Press. — P. 34. — ISBN 0820325015
14. A Survey of Adena-Hopewell (Scioto) Anthropomorphic Portraiture.
15. Power Susan Early Art of the Southeastern Indians-Feathered Serpents and Winged Beings. — University of Georgia Press. — P. 36. — ISBN 0-08203-2501-5
16. m7/98 Encyclopedia of North American Prehistory M. (недоступная ссылка)
17. Chillicothe Earthworks-Ohio Central History.
18. Portsmouth Earthworks-Ohio Central History.
19. Lewis R. Barry Kentucky Archaeology. — University Press of Kentucky, 1996. — ISBN 0-8131-1907-3
20. Louisiana Prehistory-Marksville.
21. Copena.
22. Ian K. deNeeve Midwest Archaeological Conference.
23. Toolesboro Mounds History.
24. Trowbridge (14WY1) is an archaeological site located near Kansas City, Kansas..
25. Talk-Hopewell Tradition.
26. Free Essays-Hopewell Indian Culture.
Источник: http://ru.wikipedia.org/wiki/Хоупвеллская_традиция