This work is in the public domain in Trinidad and Tobago and the US according to the Copyright Act 1985 that was in effect at the URAA restoration on 1 January 1996 and it meets one of the following requirements:
It is a photograph or anonymous or pseudonymous work published before 1946
The author died before 1946 and
It is an engraving, literary or musical work published before 1946
It is another type of work (note the second point below)
Note: The Copyright Act 1997 and its amendments were not retroactive: "This Act shall also apply to works made, performances given, sound recordings made and broadcasts first transmitted before the date of the coming into force of this Act, provided that the term of protection had not expired under the Copyright Act, 1985"
This work is in the public domain in the United States because it meets three requirements:
it was first published outside the United States (and not published in the U.S. within 30 days),
it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States,
it was in the public domain in its home country (Trinidad and Tobago) on the URAA date (1 January 1996).