I cannot help with your request, but if people are generally thinking
about GRiDs they have I am looking for copies of GRiDBASIC and
GRiDTerm and any other software, documentation, product details anyone
might know or have.
My efforts so far are linked off this page:
http://www.retrocomputingtasmania.com/home/projects/grid
The linked Google document is somewhat chaotic since most of the
information has been scraped off
archive.org (waybackmachine) or
extracted from the defunct GRiD forum
(
http://www.pd.com/GRiDpage.html) and the Yahoo group
(
http://tech.groups.yahoo.com/group/RuGRiD-Laptop).