METADATA Corporation P.O. Box 746 Mill Valley, Cal. 94941 11 June 1975 Dr Elliott Levinthal SUMEX Computer Project Stanford University School of Medicine Stanford, Cal 94305 Dear Dr Levinthal: May we have a list of the projects which have been, and those which are, supported by SUMEX. Are the programs in the SUMEX computer system proprietary or are they in the public domain? If they are in the public domain, are listings of the programs available? Respectfully, Robert M. Baer