On Mon, 11 Nov 2019, Dr Iain Maoileoin wrote:

[ UNIX (tm) (R) ]

> I was not just commercial licensees.  I remember seeing a copy of that
> letter.  We were a Scottish University who had a legit tape sent from
> AT&T/Bell Labs for academic use.

I saw the same thing at the University of New South Wales back when
[Uu][Nn][Ii][Xx] <random symbols> was first released.

-- Dave