Learning Level II Compusoft Learning Series TRS-80 BASIC David A Lien

David A. Brain – BASIC Conversions Handbook 1981 First Edition – Apple TRS PET

TRS-80 Color Computer Interfacing, With Experiments by Andrew Staugaard

TRS-80 Level II BASIC A Self-Teaching Guide 26-2061 from 1980 - fair condition

TRS-80 Level II BASIC A Self-Teaching Guide 26-2061 from 1980 - good condition

Custom TRS-80 & Other Mysteries Book Dennis Kitsz Information Series Volume III

THE BASIC HANDBOOK by David A. Lien 1979 Compusoft Publishing IBM APPLE TRS-80

CompuSoft Learning: Learning IBM BASIC Personal Computer - David A. Lien SC 1982