Atari's own U.K. magazine I/O gets better each issue and is
          available free of charge to all Atari 400/800 owners. If you do not
          receive a copy send the serial number of your machine together with
          details of when and where you purchased it to Atari (UK) Inc., Atari
          House, Railway Terrace, Slough, Berks. This will apply even if you
          bought your machine second-hand.
          I/O would also like articles, reviews and programs from YOU. Write
          to the Editor, Mary Ann Bark - she is longing to hear from you.