This work is in the public domain in Mexico for one of the following reasons:
Its author died before 1952 (Mexico had a term of 30 years after the author's death until 1982,[1] and no copyright term extension in 1982 or later restored copyright to expired works).
It is an artistic or literary work published before 1918 (Mexico had a term of 30 years until 1948).[2]
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
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The author died in 1946, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 75 years or fewer.
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 (Mexico) on the URAA date (1 January 1996).
For background information, see the explanations on Non-U.S. copyrights. Mexican works published before 1952 expired before 1982 as Mexico was 30 pma until 1982 and extensions were not retroactive.