I have been in contact with Christina Z. Anderson about a tir-color gum dichromate work shop in 2007. This was her response:

Hi Doyle,
Perhaps--no plans as of yet but I live close to the Photographer's Formulary
and I was thinking about it! I will keep your email in my BIZ folder in
case I do.
Christina Z. Anderson
Assistant Professor
Photo Option Coordinator
Montana State University
Visual Communications Building Room 220
Box 173350
Bozeman Montana 59718
406.994.6219
CZAphotography.com

LETS GIVE HER SOME ENCOURAGEMENT!