IBM DOS 2.1 Manual 6024120 w/ 5.25 Disks, Quick Reference Card, User's Guide. Made by International Business Machines, 1983, First Edition, software.

Includes core manual for IBM/Microsoft Disk Operating System version 2.1 in original binder, DOS and Supplemental Programs 5.25-inch diskettes, Quick Reference Card, and User's Guide.

In mostly very good or better condition, bit of soiling on cover of binder, label on Supplemental Programs disk is very hard to read; does not include the outer slipcase.

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