Check out: Magnolia - The Tektronix Unix Personal Computer September 1980
This redates - Sun or Apollo, but not the Perq - a.k.a. the 'Pascalto'

Magonila was done in Tek Labs and it eventually birthed Tek Workstation Division which was a complete failure, although did Tek eventually commercialized the Magnolia as the Tek 4404 -- a Smalltalk system (which you can so a web search).  One of the Busines Schools (HBS I think) wrote a study about it called 'Why Skunks Don't Work."
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On Wed, Jan 25, 2023 at 7:32 PM Joseph Holsten <joseph@josephholsten.com> wrote:
It seems like there are bountiful articles able the decline and fall of the UNIX workstation, but I’ve had a hard time finding narrative about workstations prior to the Stanford SUN workstation.

* was the SUN-1 the first commercially successful product? What are the “it depends” edge cases?
* were there common recipes for proto-workstations within academic or industrial research? What did those look like, who was involved?
* What do I really mean by workstation? Ex.gr. If an installation had a PDP-11 with a single terminal and operator, is it not a workstation? Is it the integration of display into the system that differentiates? 

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