Getting Acquainted With Your ZX81 Sinclair Computer Tim Hartnell 3rd Ed - AS IS

Getting Acquainted with your ZX81 Sinclair Computer - Tim Hartnell 3nd Edition

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

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

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

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

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

The Sinclair ZX81