Columbia subject headings:
Indians--History--Congresses.
Indians--Politics and government--Congresses.
Political anthropology--America--Congresses.
Harvard subject headings:
Indians--History--Congresses.
Indians--Politics and government--Congresses.
Political anthropology--America--Congresses.
Princeton subject headings:
Indians--History--Congresses.
Indians--Tribal government--Congresses.
Political anthropology--America--Congresses.