Heath Zenith Microsoft MS-DOS Vrs 2 Manual & Software

Microsoft Early C Compiler System Reference Manual for MS-DOS Systems

Heath Zenith Microsoft Sort Manual & Software

Heath Zenith Microsoft Word Manual & Software

Heath Zenith Microsoft Multiplan Manual & Software (unopened)

Zenith Heath Z-100 Z-140 Manual lot of 3 Owner's MS DOS Basic Vintage Computer

Vintage Software: Heath/ Zenith Z100 & PC Microsoft Fortran Compiler 5.25”

Vintage Zenith Data Systems Heath Microsoft MS-DOS Manual Z-100 Series