Well, being married to a mexican, after reading this, and talking with my inlaws (my family, since my parents have died), I have managed to locate a film that will provide you with a great deal of good reference on general mexicans. Like Water For Chocolate. It's period enough, as well. However, avoid watching when hungry. The story itself is very heavily steeped in the magery of food. Also, for some really cool stuff but not as poser useful, read the book by Laura Esquivel. Had I but a camera right now, I'd be a grabbin texture sources, lol...

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)