Columbia subject headings:
Harvard subject headings:
Germans--South America--History.
Germany--Relations--South America.
Photography--South America--History.
Postcards--South America--History.
South America--Relations--Germany.
Princeton subject headings:
Photography--Germany--History.
Photography--Latin America--History.
Postcards--Germany--History.
Postcards--Latin America--History.
South America--History--1830-