Allan, Try The Southwest Folklore Center at the University of Arizona in Tucson: 520-621-6423. Anyone who answers that phone will surely be able to help you. Also, there's a man in Tucson who used to be heavily involved (& may still be) with that Center who would be well worth chatting with: Dr. Jim Griffith: he is one of those amazing "walking treasure troves" of all things folkish, especially of Hispanic Folklore (as well as a fine clawhammer banjo player). The folks at the center will know how to reach him.