Found these books while house cleaning. (1) "Programmer's Guide, AT&T Personal Computer 6300 GWBASIC By Microsoft". Perfect condition in AT&T 3 ring binder. $10 plus 3.20 for priority mail. (the 6300 was made by Olivette and was a 8086 powered MS-DOS computer.) (2) Two clear plastic envelopes containing "IBM Personal System/2 Model 55 SX Quick Reference" and other papers/manuals and a disk. Never opened. $5 ea plus $3.20 for priority mail. Email directly if you're interested. Joe