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]