[TUHS] 7th Edition C Reference Manual and UNIX Programming - First Edition

All, 1. I have a physical copy of the V7 UPM published by Holt, Rinehart and Winston (HRW) from 1983 (2 volume phone book). In it, there is a C Reference Manual (pp. 247-277, reprinted with minor changes from the first C book by K&R and including a Recent Changes to C addendum). I also have a PDF that was supposedly created from sources that has a C Reference Manual in it, but, in /usr/doc/cman, there's an inscription that reads, "Sorry, but for copyright  reasons,  the  source  for  the  C Reference Manual is not distributed." and the one in the pdf appears to be identical to the one in the V6 UPM (which I have a print-on-demand version of). Are the *roff sources (or a clean PDF) available for the reprint? I have located a PDF copy of the HRW edition, but it's got the usual deficiencies of being a scanned copy. 2. In same manual, there is an article entitled, UNIX Programming -- Second Edition by K&R. Where is the first edition located? It isn't in the V6 UPM. Regards, Will