In article by Martin Crehan:
An interesting article on the early versions of Unix
can be found online at:
http://www.daemonnews.org/199903/history.html
The arrtcle, which is an slightly updated version originally published in
Microsystems in 1984, is titled:
A History of UNIX Before Berkeley: UNIX® Evolution, 1975-1984
by Ian F. Darwin and Geoffrey Collyer
Martin Crehan
Thanks Martin, I've spoken to Ian and have permission to add a link to
it from the PUPS/TUHS web pages.
Warren