Nicolas de Anda Sanchez, Teocaltiche

I contacted George Farias of Borderland Bookstore, asking when he might obtain more copies of Nicolas de Anda Sanchez's books on Teocaltiche. He indicated that he has not been successful in contacting the author's son, Nick de Anda Sanchez, to make arrangements. He wonders whether he changed his email address. If anyone can help him out, I would appreciate it. (And/or let me know of any other source). George's email address is: gfarias@satx.rr.com
Raquel Ruiz