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Drawing and photo of Willoughby figurine with squash (?) vines and flowers, and maize ceremony (?) plates labeled.
Jackson, D.K., A.C. Fortier, and J.A. Williams 1992. The Sponemann Site 2 (11-MS-517): The Mississippian and Oneota Occupations. American Bottom Archaeology, FAI-270 Site Reports, Vol. 24. University of Illinois Press, Urbana. color plate B
Image courtesy of the Board of Trustees of the University of Illinois and the Illinois Transportation Archaeological Research Program.