This work is in the public domain both in Brazil and in the United States because it was first published in Brazil (and not published in the U.S. within 30 days) and it was first published before 1 March 1989 without complying with U.S. copyright formalities, such as copyright notice and it is one of the following:
A work whose author died before 1936;
An anonymous work or a work deemed to be anonymous, or a work by a collective person whose authors were not individually identified, published or disclosed before 1936;
Photographic works not considered to be "artistic creations" produced before 1 January 1996. (Includes documentary photography in general (commercial or not), as well as non-artistic photographic portraits. See here for some guidance on this);
Cinematographic, phonographic, photographic and applied arts works completed before 1936.