Columbia subject headings:
Harvard subject headings:
America--Discovery and exploration--Congresses.
Columbus Quincentenary, 1992-1993--Congresses.
Indians of North America--First contact with Europeans--Congresses.
Indians of North America--History--Congresses.
Indians, Treatment of--North America--Congresses.
Indians--First contact with Europeans--Congresses.
Princeton subject headings:
America--Discovery and exploration--Anniversaries, etc.
Columbus Quincentenary, 1992-1993.
Indians of North America--History.