Columbia subject headings:
Panama Canal (Panama)--History.
Panama--Discovery and exploration--French.
Panama--History--To 1903.
Reclus, Armand, 1843-1927--Travel--Panama.
Harvard subject headings:
Panama Canal (Panama)--History.
Panama--Discovery and exploration--French.
Panama--History--To 1903.
Reclus, Armand, 1843-1927--Travel--Panama.
Princeton subject headings: