Lesk's version predates V7 as was pointed out.  Which I had forgotten in my counting.
The V7 version (or traditional) is what they are referring here I believe and indeed that spread as part of V7

On Tue, Mar 7, 2017 at 10:45 PM, Dave Horsfall <dave@horsfall.org> wrote:
http://www.thefullwiki.org/UUCP

``UUCP was originally written at AT&T Bell Laboratories, by Mike Lesk, and
  early versions of UUCP are sometimes referred to as System V UUCP.''

Err, it was V7, wasn't it?  That considerably predates SysV...

--
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."