Columbia subject headings:
American Bottom (Ill.)--Antiquities.
Cahokia (Ill.)--Antiquities.
Florence Street Site (Cahokia, Ill.)
Illinois--Antiquities.
Harvard subject headings:
American Bottom (Ill.)--Antiquities.
Cahokia (Ill.)--Antiquities.
Florence Street Site (Cahokia, Ill.)
Illinois--Antiquities.
Princeton subject headings:
American Bottom (Ill.)--Antiquities.
Cahokia (Ill.)--Antiquities.
Florence Street Site (Cahokia, Ill.)
Illinois--Antiquities.