Columbia subject headings:
Hopewell Site (Ohio)
Hopewell culture.
Indians of North America--Ohio--Antiquities.
Ohio--Antiquities.
Willoughby, Charles Clark, 1857-1943.
Harvard subject headings:
Hopewell Site (Ohio)
Hopewell culture.
Indians of North America--Ohio--Antiquities.
Ohio--Antiquities.
Willoughby, Charles Clark, 1857-1943.
Princeton subject headings:
Hopewell Site (Ohio)
Hopewell culture.
Indians of North America--Ohio--Antiquities.
Ohio--Antiquities.
Willoughby, Charles Clark, 1857-1943.