Here is a nice set of 4 vintage books for your Timex Sinclair 1000 /ZX81. Included in this package:

Basics of Timex Sinclair 1000, ZX81 Basic

49 Explosive Games for the ZX81

ZX81 Basic Book

Making the Most of Your ZX81

Three of the books are in good condition. The copy of 49 Explosive Games is torn on the lower right back cover along with several other pages.

A great opportunity to add to your Timex Sinclair computer collection. Thanks for taking a look.