Vintage IBM Personal Computer software collection featuring the Disk Operating System (DOS) Version 2.10 and BASIC for the IBM PCjr. This set includes the original cloth-bound three-ring binders with their respective slipcases, published by Microsoft Corp. for IBM. The DOS binder contains the User's Guide, reference manual, and two 5.25-inch floppy disks in IBM-branded sleeves. The BASIC binder from the Hardware Reference Library includes the manual for the IBM PCjr. Both manuals retain their original internal documentation, including license agreements and upgrade forms, dated 1983. These pieces represent a significant era in computing history, specifically tailored for the early IBM PC and PCjr systems.