Rush credited Xerox today with the WYSIWYG interface and referred to Jobs tour of Xerox Parc.
I remember a PBS series on the history of computing. They showed a clip of some guy demonstrating a mouse and icon driven interface. I think it was circa mid 60s.
In 1970 the only available output interfaces were line printers, ball head printers, nixie tubes, and line display CRTs.
Graphic screen CRTs came in the early ‘80s and were rare.
ML, did you see my post #192? Sounds a bit like what you mentioned.