I am a graduate student that is working on a paper, and I am just flooded with work right now, so if anyone could help I would greatly appreciate it.
You should have a look at this: http://www.cedoz.org/site/content.php
It's a collection of primary and secondary documents from the Zapatismo, including speeches, declarations, essays and links to further information. Near the end there is a link about "Chiapas y México" that might help.