Columbia subject headings:
Brazil--Description and travel.
Kummler-Sauerländer, Hermann, 1863-1949--Travel--Brazil.
Swiss--Brazil--History.
Harvard subject headings:
Brazil, Northeast--Description and travel.
Brazil, Northeast--Pictorial works.
Europeans--Brazil, Northeast--Pictorial works.
Kummler-Sauerländer, Hermann, 1863-1949--Travel--Brazil.
Merchants--Brazil, Northeast--Pictorial works.
Swiss--Brazil, Northeast--History--19th century.
Princeton subject headings:
Brazil, Northeast--Description and travel.
Brazil, Northeast--Pictorial works.
Europeans--Brazil, Northeast--Pictorial works.
Kummler-Sauerländer, Hermann, 1863-1949--Travel--Brazil.
Merchants--Brazil, Northeast--Pictorial works.
Swiss--Brazil, Northeast--History--19th century.