Columbia subject headings:
American Bottom (Ill.)--Antiquities.
Mississippian culture.
Robinson's Lake Site (Ill.)
Harvard subject headings:
American Bottom (Ill.)--Antiquities.
Excavations (Archaeology)--Illinois--American Bottom.
Madison County (Ill.)--Antiquities.
Mississippian culture--Illinois--American Bottom
Robinson's Lake Site (Ill.)
Princeton subject headings:
American Bottom (Ill.)--Antiquities.
Mississippian culture.
Robinson's Lake Site (Ill.)