Columbia subject headings:
America--Antiquities--Congresses.
Indians of Mexico--Antiquities--Congresses.
Indians of Mexico--Origin--Congresses.
Indians--Antiquities--Congresses.
Mexico--Antiquities--Congresses.
Prehistoric peoples--America--Congresses.
Harvard subject headings:
America--Antiquities.
Indians of Mexico--Population.
Mexico--Antiquities.
Paleo-Indians--America--Migrations--Congresses.
Paleo-Indians--America--Origin--Congresses.
Paleo-Indians--Mexico--Congresses.
Princeton subject headings:
America--Antiquities.
Indians of Mexico--Population.
Mexico--Antiquities.
Paleo-Indians--America--Migrations--Congresses.
Paleo-Indians--America--Origin--Congresses.
Paleo-Indians--Mexico--Congresses.