Atari Portfolio HPC 101 Parrallel Interface

Vintage 1983 PKASO/U Apple II Parallel Printer Interface Manual User's Guide

How To Program Your IBM PC paperback by Tim Hartnell, 1983

Vintage Sharp CE-126P Printer & Cassette Interface Rare

1984 Tim Hartnell How to Program Your Commodore 64 Ballantine C64 Paperback

The Book Of Listing Fun Programs For The BBC Microcomputer By Hartnell & Ruston

Games BBC Computers Play By Hartnell Gee James Vintage

Let Your BBC Micro Teach You To Program Book - Tim Hartnell - Basic Programming