This work is in the public domain because it was published in Uruguay as anonymous or pseudonymous more than 50 years ago. Under uruguayan laws 9.739, 17.616 and its amendments: "In the anonymous and pseudonymous works, the term shall be fifty years after the work has been lawfully made available to the public, unless before the said period the author reveals his identity [...]" (details).

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]
• It is a work of a Mexican government (federal, state, or municipal) and it was published more than 100 years ago.^[3]
• Anonymous works are considered in the public domain until the author or the owner of the rights are identified.^[4]

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1. ↑ See 1963 Art.23(I).
2. ↑ See 1928 Art.1183.
3. ↑ See 1996-2018 Art.29(II).
4. ↑ See 1996-2018 Art. 153.