The 1969-71 AlphaCom terminal is a candidate for https://terminals-wiki.org/ Here are some photos http://www.vintagecomputer.net/browse_thread.cfm?id=502 I got this from the inventor's son. I am unsure how many of these were made or put into production. The terminal kind-of worked for a while, it saves forms in core memory and transmits them like a glass teletype (i.e. datapoint 3300) and would have been a competitor machine. Unfortunately it's too complex for me to decipher, there are no schematics and I am unable to get it running again. The Sanyo TV adapted as a display is also dysfunctional now. Perhaps someone here would like to help me make progress. I have a ton of photos on my site, linked from the above thread, but doubtless more research is necessary. I am located in Landenberg, PA USA near Philadelphia due west of Newark Delaware. BIll