United States amateur ọkà mmụta ihe ochie; nke Peoria, Illinois, USA
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340065W. H. AdamsW. H.AdamsAdams,_W. H.United States amateur ọkà mmụta ihe ochie; nke Peoria, Illinois, USA
- "Mounds in the Spoon River Valley, Illinois." (1880) Smithsonian Institution, Annual Report for 1879, pp. 368-73. Washington
- "Mounds in Spoon River Valley" (1883) in Miscellaneous Papers Relating to Anthropology Smithsonian Institution, Annual Report for 1881, pp. 558-63. Washington.
- "Mounds in Spoon River Valley, Illinois," (1885) Smithsonian Institution, Annual Report for 1883. pp. 835-38. Washington. (Reprint of Adams' 1883 report, with minor alterations).