When I was at Tektronix in the late 70s, I was able to get my boss to buy me (us - but for my desk) a copy of the original  (with the orange and red covers for the two books - the commentary was in one and the sources in the other but I have forgotten which was which).  However, my own (current) photocopy was from CMU a few years before.   I left Tek and I have no idea what happened to that new copy since Tek owned it (and I was not smart enough at the time to re-duplicate it, so my current copy is a fading nth generation one).  I must have handed the "real" one to the late Terry Lawskodi, or maybe Larry Morandi or Steve Glaser (I'll have to ask Steve and Larry if they know what became of the Tek copy).

On Thu, Apr 11, 2019 at 10:55 AM Dan Cross <crossd@gmail.com> wrote:
On Thu, Apr 11, 2019 at 9:49 AM Clem Cole <clemc@ccc.com> wrote:
As my very fragile nth edition photocopy shows, the original Western Electric copies are not troff'ed and run through a typesetter because John (like most of us at the time) did not have access to one (and Tom Ferrin had not yet done the vcat(1) hack at UCSF).  Lions used standard nroff output - (in this case, originally to 132 column line printer paper I believe). 

Indeed. Even the mid-90's Peer-to-Peer press reprinting appears to be, roughly, a facsimile of line printer output. I say 'roughly' because there is some prefatory material at the beginning that is properly typeset: dedications, acknowledgements, etc, all written at the time of (re)publication and similarly a set of "appreciations" at the end.

Interestingly, the title page appears to be approximately original and is typeset. It also includes this little gem of a note: "COPY NO. 050B  NAME PROPERTY OF BELL LABORATORIES, INC. COPY TO BE RETURNED TO: COMPUTING INFORMATION SERVICE MH 2F-128 UNIX OPERATING SYSTEM SOURCE CODE VERSION 6" (line breaks elided).

I don't think I've ever seen a copy of the original; I suspect the title page was reset for the PP publication, though it is of course possible that Lions could have prepared that specially: doing a "one-off" for a single page, perhaps under contract with an actual publishing company or graphic artist or something, would have been reasonable while the rest of the booklet contents were taken from listings.
 
[snip]

        - Dan C.