1987 Apple IIGS Technical Reference 400pg Graphics Sound 65816 Programming GS/OS

1978 S-100 Bus Handbook Altair 8800 + Apple II PET/CBM SWTPC 6800 SS-50 Buses

6809 Assembly Language Programming - Leventhal Tandy Color Computer 3 CoCo OS-9

1985 Chilton Repair & Maintain Your Apple II+ IIc IIe Computer, Disk Drive SAMS

1984 Apple Macintosh User Guide 300pgs 128K Mac Technical Reference

1984 Introducing the Apple IIc BASIC Logo Programming ProDOS Technical Reference

6809 Assembly Language Programming - Leventhal Tandy Color Computer 3 CoCo OS-9

Z80 Assembly Language Subroutines Leventhal TRS-80 Commodore 128 Programming