Columbia subject headings:
Harvard subject headings:
California--Antiquities.
Indians of North America--Klamath River Valley (Or. and Calif.)--Antiquities.
Klamath River Valley (Or. and Calif.)--Antiquities.
Petroglyphs--Klamath River Valley (Or. and Calif.)
Princeton subject headings:
California--Antiquities.
Indians of North America--Klamath Valley--Antiquities.
Klamath Valley--Antiquities.
Petroglyphs--Klamath Valley.