ISO (Infrared Space Observatory) is an ESA space observatory to be launched in September 1995. Up-to-date information on the mission can be obtained via anonymous FTP from ftp.estec.esa.nl:pub/iso or ftp.ipac.caltech.edu:pub/iso. Information on ISO on the WWW is being set up under URLs http://isosa2.estec.esa.nl:8223/ and http://www.ipac.caltech.edu. Data centers are being established at Heidelberg (Germany) and Rutherford Appleton Labs (RAL, UK); see, e.g., Gabriel et al. (1992). The ISO/IRAS Newsletter is edited by H. Walker (hjw@star.rl.ac.uk), and ISO Info is a newsletter issued by ESA (contact K. Leech at kleech@isosa6.estec.esa.nl).