Wow.You're pretty serious about this.
I was contacted by Michael. He's got a good handle on this.
Is this info being compiled in any sort of common area? It would be good to start a DT group site to warehouse all this data. Has anyone contacted Guy Stricherz? He was the last man standing in NYC with his lab CVI, which made dyes for big shot art photographers. He would have the freshest memory of masking techniques, developing times, etc.