Columbia subject headings:
Inland water transportation--Río de la Plata Region (Argentina and Uruguay)--History.
Passenger ships--Río de la Plata Region (Argentina and Uruguay)--History.
Steamboat lines--Río de la Plata Region (Argentina and Uruguay)--History.
Harvard subject headings:
Ferries--Rio de la Plata (Argentina and Uruguay)--History.
River steamers--Rio de la Plata (Argentina and Uruguay)--History.
Shipwrecks--Rio de la Plata (Argentina and Uruguay)--History.
Princeton subject headings:
Ferries--Rio de la Plata (Argentina and Uruguay)--History.
River steamers--Rio de la Plata (Argentina and Uruguay)--History.
Shipwrecks--Rio de la Plata (Argentina and Uruguay)--History.