Columbia subject headings:
Postcards--Trinidad and Tobago.
Trinidad and Tobago--History--Pictorial works.
Trinidad and Tobago--Pictorial works.
Harvard subject headings:
Postcards--Private collections--Trinidad and Tobago.
Postcards--Trinidad and Tobago--History.
Sabga, Joseph Abdo--Photograph collections.
Travelers' writings.
Travelers--Trinidad and Tobago--Anecdotes.
Trinidad and Tobago--Description and travel--Anecdotes.
Trinidad and Tobago--History--20th century--Pictorial works.
Trinidad and Tobago--History--Anecdotes.
Princeton subject headings: