Columbia subject headings:
Harvard subject headings:
American River Region (Calif.)--Antiquities.
California--Antiquities.
Indians of North America--California--American River Region--Antiquities.
Petroglyphs--California--American River Region.
Princeton subject headings:
Indians of North America--California--Antiquities.
Indians of North America--Nevada--Antiquities.
Petroglyphs--Sierra Nevada (Calif. and Nev.).