Columbia subject headings:
Harvard subject headings:
American Bottom (Ill.)--Antiquities.
Excavations (Archaeology)--Illinois--American Bottom.
Illinois--Antiquities.
Indians of North America--Illinois--American Bottom--Antiquities.
Mississippian culture--Illinois--American Bottom
Princeton subject headings:
American Bottom (Ill.)--Antiquities.
Excavations (Archaeology)--Illinois--American Bottom.
Illinois--Antiquities.
Indians of North America--Illinois--American Bottom--Antiquities.
Mississippian culture--Illinois--American Bottom.