I've found a couple more documents lurking in my desk that I've completely forgotten about.
The first is a UniSoft Uniplus+ System V User Guide. Circa 1984. Basically a SysV Unix user's guide. I have no idea what platform this was intended for, as it's pretty much a generic document. A couple hundred pages. The second is a sales kit for CMS Enhancements. Nice slick brochures for PC, Apple and Sun. No technical documentation, per se--just something you'd pass out at a trade show (which is probably where I got it). Circa 1990. Includes the brochure for the CMS 386 PC. It'll all fit in a USPS PM envelope, I'm guessing. I want postage only. --Chuck