Columbia subject headings:
American Bottom (Ill.)--Antiquities.
Dyroff Site (Ill.)
Go-Kart North Site (Ill.)
Levin Site (Ill.)
Harvard subject headings:
American Bottom (Ill.)--Antiquities.
Dyroff Site (Ill.)
Excavations (Archaeology)--Illinois--American Bottom.
Go-Kart North Site (Ill.)
Indians of North America--Illinois--American Bottom--Antiquities.
Levin Site (Ill.)
Monroe County (Ill.)--Antiquities.
Saint Clair County (Ill.)--Antiquities.
Princeton subject headings:
American Bottom (Ill.)--Antiquities.
Dyroff Site (Ill.)
Go-Kart North Site (Ill.)
Levin Site (Ill.)