Columbia subject headings:
Companhia da Estrada de Ferro de D. Pedro II--History.
Railroad companies--Brazil--History.
Railroads--Brazil--Design and construction--History.
Harvard subject headings:
Companhia da Estrada de Ferro de D. Pedro II--History.
Railroad companies--Brazil--History.
Railroads--Brazil--Design and construction--History.
Princeton subject headings:
Companhia da Estrada de Ferro de D. Pedro II.