The Watchmaker’s Guidebook to the Timex/Sinclair Computers is available from TSG Enterprises. The book contains a directory of suppliers with a brief description of their wares. About 120 software suppliers and 50 firms offering hardware peripherals for the little computer are listed, along with the addresses of 50 “ancillary” suppliers. The 44-page book also lists users’ groups, magazines and books helpful to the Timex/Sinclair 1000 owner and an index of articles that have appeared in computer magazines about the computer.