Hello, I'm Matt Gilmore, and I hope I'm reaching the inbox of Warren Toomey. I've recently worked with Arnold Robbins to take scans of his "Documents for UNIX" 2 volume set concerning Unix 4.0 as well as a small reference guide flipbook concerning that same version. Let me know if I can provide more info, ultimately I just want to get these out there archived somewhere so they don't get lost. - Matt G. [ Clem Cole adds ... ] This is PWB 4.0 from the Unix Support Group (Summit NJ) in 1981 and >>only<< released to Bell System. PWB 3.0 was renamed System III and was available for licensing, but PWB 4.0 was not. The 1981 release of PWB 4.0 or Unix/TS 4.0 which these are the docs, should not be confused with Research Fourth Edition (Murray Hill NJ - Computer Research Group - Ken, Dennis and team) which was released on the early 1970s and was the first Unix available for licensing by Universities and Researchers. [ Arnold Robbins adds ... ] In 1982, knowledge of C and UNIX were not so common. I was working on my M.S. at Georgia Tech. My professor put me in touch with a friend of his from the local ACM chapter who worked at Southern Bell, one of the Regional Bell Operating Companies (RBOCs), who needed some C programming done on UNIX. The system was a PDP-11/70 running USG UNIX 4.0. I was given the documentation to use as reference while working. I got to keep the reference manual (sections 1-8), a quick reference guide, and a fold out quick reference card for the MM macros. I spent my lunch breaks reading the manual and the documents; I learned a HUGE amount by doing so. The "Documents For UNIX" were in two three-hole punched binders. Those I wasn't going to be able to keep, so I started photocopying them, a few pages every day; Southern Bell had nice duplexing photocopiers on each floor. They may have even had thee-hole punched paper in one of the paper drawers; I think so but don't remember for sure. Anyway, when I was done I had the full set of documents for myself. They pretty much sat on my shelf since then (40 years ago!). I'm very glad that I hadn't tossed them and was able to contribute them to be preserved. Before packing them to go to the US, I took a quick scan through what's there; it's an interesting mix. Besides a number of the documents we're familiar with from V7 / BSD, there are quite a number of others specific to USG UNIX. Worth reviewing by all the UNIX history buffs!