Sorry, I do not have 11SP42. I think I had it confused in my head with 11SP47 (GCE's Portacalc of course). Lots of the SIG symposia tapes are a kind of "best of" collection with contents repeated or improved from year to year. Is there something specific you need from 11SP42? If so it's probably on some other DECUS tape I can help you find. Tim.