Columbia subject headings:
Cannon, Joseph Gurney, 1836-1926.
Panama--Description and travel.
Venezuela--Description and travel.
West Indies--Description and travel.
Harvard subject headings:
Cannon, Joseph Gurney, 1836-1926.
Panama--Description and travel.
Venezuela--Description and travel.
West Indies--Description and travel.
Princeton subject headings:
Cannon, Joseph Gurney, 1836-1926.
Panama--Description and travel.
Venezuela--Description and travel.
West Indies--Description and travel.