I thought people would interested to read Murray Turoff's response to reading email I forwarded him about the call for RFC600
His dates are confused about on line conferencing.
We were operational at njit in 1970 with online asynchronous conferencing with stored transcripts and voting, I was very well aware of the plato work and it was stuart umpleby who created a conferencing like system on plato in 1972. we also had the first chat system with storage in 1971. in 1973 englebart admitted to me he had no way to share files among on line active users in his ibm envinroment but that did not stop him from trying to claim conferencing as well from his decision room synchronous work.
It seems that systems that were later commercialized seem to have fun revising history. This has been pretty rampant. Regards Quentin