OK. If Fuji E-6 came out in about 1990, were they E-4 before that? The Fujichrome I bought in the 80's still had processing included as I recall, so I could see the E-4 process being continued by Fuji in their labs.
Or was the process something else? Was the Fujichrome (RD100, I think it was called) in the mid to late 70's an E- process? I thought it was.