| Computers For Kids: Sinclair ZX81 Edition | | Sinclair ZX81, Timex/Sinclair 1000 |
| Getting Acquainted With Your ZX81 | | Sinclair ZX81, Timex/Sinclair 1000 |
| Learning Timex/Sinclair BASIC for the Timex 1000 and the Sinclair ZX81 | | Sinclair ZX81, Timex/Sinclair 1000 |
| Machine Language Programming Made Simple for your Sinclair & Timex TS1000 | | Timex/Sinclair 1000 |
| Making the Most of Your Timex Sinclair 1500/1000 | | Timex/Sinclair 1000, Timex/Sinclair 1500 |
| Making the Most of Your ZX-81 | | Timex/Sinclair 1000 |
| Mastering Machine Code on Your ZX-81 | | Sinclair ZX80, Sinclair ZX81 |
| Not Only 30 Programs for the Sinclair ZX81 | | Sinclair ZX81, Timex/Sinclair 1000 |
| The Complete Sinclair ZX81 & Timex TS1000 BASIC Course | | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000 |
| The Explorer's Guide to the ZX-81 and Timex Sinclair 1000 | | Timex/Sinclair 1000 |
| The ZX81 Companion | | Sinclair ZX81, Timex/Sinclair 1000 |
| The ZX81 Pocket Book | | Sinclair ZX81, Timex/Sinclair 1000 |
| Timex Sinclair 1000: Programs, Games, and Graphics | | Timex/Sinclair 1000 |
| Understanding Your ZX81 ROM | | Sinclair ZX81, Timex/Sinclair 1000 |
