The Explorers Guide to the ZX81 - Mike Lord PB 1982 Timedata Computers

49 Explosive Games For The ZX 81 Paperback Book 1981 Timex Sinclair

Gateway Guide to the ZX-81 and ZX-80 by Mark Charlton Sinclair

Getting Acquainted With Your ZX81 Sinclair Computer Tim Hartnell 3rd Edition

Sinclair ZX81 Basic Programming 1980 Book By Steven Vickers

I Wish I Knew About The Spectrum and ZX81 Jonathan Chapple Book 1983 Retro

Sinclair ZX81 BASIC Programming Steven Vickers 1981 2nd Ed Manual Computing

Programming in BASIC a beginners course 1975 BASIC computing history RARE