I can confirm that we (JPL Computer Graphics Lab) used
a PS-2 in mid
'70s to mid '80s time frame. Doug's recollection feels about right
to me, though I don't have documentation to support it.
I have a Genesco GCT-3000 ('76-ish..) which was on an Interdata
8/32 at JPL that supposedly was used to display decommutated
Viking Orbiter image data telemetry.
The other displays from the 70's that I have are a VT-11 with 19"
display, a Megatek Whizzard from Bob Shannon, and a unused 4014 still
in the original box.