Microsoft's MS-DOS User's Reference Guide 1984 Que Vintage Computer

Hp 48g Series Advanced User's Reference Manual. Book Only. 48GX Hewlett Packard.

Unix User's Manual Reference Guide 1986

Introduction to Programming in Basic 1983 Navedtra 10079-2 Naval Education PB

Vintage Commodore 64 User's Guide Manual 1982 First Edition 2nd Printing Spiral

Lotus 1‑2‑3 Second Edition User’s Guide – Manual Only – Vintage DOS Spreadsheet

Commodore C64 User's Manual, Original 1984 Edition, Programming Operation Guide

1997 Vintage User's Guide Manual for AppleVision 750 and 750AV displays