This photo, movie, sound recording or work of applied art finished by December 31, 1935 (and not published in the U.S. within 30 days) is public domain both in Brazil and United States because it was first published in Brazil and entered the public domain 60 years after creation.
The protection term of 60 years was the effective one, according to art. 45 Lei 5988/1973. It was already public domain when legislation changed in 1998 and remains so according to art 5, XXXVI, Constituição da República Federativa do Brasil de 1988. Lei 5988/1973 was also the effective law on the URAA date (January 1, 1996).
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This photograph is in the public domain in Brazil because it was created there before 19 June 1998 and, according to the 1973 Brazilian copyright law, is not considered to be an artistic creation. This applies to documentary photographs in general (commercial or not), as well as non-artistic photographic portraits. See here for some guidance on this.
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 (Brazil) on the URAA date (1 January 1996).
The 1973 law was in force until being replaced by the current (non-retroactive) Law 9.610 of 19 February 1998 (see translation), which came into effect on 20 June 1998. Photographic works produced after that date follow the Law 9.610 regulations.
Captions
Dead manatees hunted from the Amazon River circa 1920