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 since publication until 1948).[2]
It is a work of a Mexican government (federal, state, or municipal) and it was published before more than 100 years ago (before 1 January 1924).[3]
Anonymous works are considered in the public domain until the author or the owner of the rights are identified.[4]
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.