Columbia subject headings:
Tonga--History.
Harvard subject headings:
Salote Tupou III, Queen of Tonga, 1900-1965.
Taufa'ahau Tupou IV, King of Tonga, 1918-2006.
Tonga--History.
Princeton subject headings:
Taufa'ahau Tupou IV, King of Tonga, 1918-2006.
Tonga.