American Sinclair users were in a unique position not shared with their British counterparts. Initial support from magazines and publishers was poor because the ZX80 and ZX81 computers were not taken seriously. Books from British publishers and magazines were available to some Americans, either on the newsstand or through mail order.
Domestic magazines and publishers began supporting the computers they sold in significant numbers.
TS 1000
An Introduction to VU-Calc Spreadsheeting for the Timex/Sinclair 1000 and the Sinclair ZX-81
Online
TS 1000
TS 2068