Columbia subject headings:
Harvard subject headings:
Copan Lake Region (Okla. and Kan.)--Antiquities.
Excavations (Archaeology)--Copan Lake Region (Okla. and Kan.)
Indians of North America--Copan Lake Region (Okla. and Kan.)--Antiquities.
Kansas--Antiquities.
Oklahoma--Antiquities
Princeton subject headings:
Copan Lake Region (Okla. and Kan.)--Antiquities.
Excavations (Archaeology)--Copan Lake Region (Okla. and Kan.).
Indians of North America--Copan Lake Region (Okla. and Kan.).--Antiquities.
Kansas--Antiquities.
Oklahoma--Antiquities.