Columbia subject headings:
Photography of railroads--Brazil.
Railroads--Brazil--History--19th century.
Railroads--Brazil--Pictorial works.
Harvard subject headings:
Photography--Brazil--History--19th century.
Railroads--Brazil--History--19th century--Pictorial works.
Princeton subject headings:
Photography of railroads--Brazil.
Railroads--Brazil--History--19th century.
Railroads--Brazil--Pictorial works.