Guide to Mexican legal materials (primarily federal) online and at the UW-Law Library. Sources are mainly in Spanish; annotations are given in English where deemed necessary.
Note the dates of publication for each text, as some may be outdated.
From Chamber of Deputies of Mexico's Federal Congress. All of the various codes may be accessed in Spanish. (State legislation can also be accessed from this portal by clicking on “Leyes y Poderes Estatales”.)