Computer Help.

Two projectors John. Do you take it in turn giving talks to yourself? No, seriously, I assume they are your museum. About 8 years ago I went to a meeting and someone there demanded an overhead projector to say what he was going to say. Everyone went round and round, and finally they dug one up from the cellar or somewhere. Today I think he would be out of luck. One thing I really used to be impressed with as a kid was the epidiascope they used at school. It was really impressive, all brassy and shiny, and I should think it was probably 50 years old then. I always wanted one.