last update: March 1, 1996

My homepage cybersphere is so complex at this point, that I can no longer identify the source of some of the icons and imagery. Here is an attempt to do justice to the sources. This material is scattered throughout the cybersphere.

1. The image on my digital business card is Renoir's painting entitled "Alfred Sisley". This was digitized from a postcard printed by Dover Publications [undated].

2. The Technology Outreach Program Globe is a screenshot of display produced by PM Globe, an OS/2 utility marketed by IBM (1991).

3. The painting of Blaise Pascal surrounded by a red border is actually a digitized image of the cover page of the ACM Lectureship Program Guide. Copies of this image may be obtained from the ACM by contacting "".

4. Most, if not all, of the screenshots come from articles of mine in various magazines and journals. Additional information may be found under the "columns and editorials" and "publications" links.

5. da Vinci's "Mona Lisa" and "The Last Supper", and Edouard Manet's "Luncheon on the Grass" are bit images by Ruediger Schuetz. These and other digitized masterpieces are contained in the Abacus Art Masterpieces on Your PC collection, Abacus, 5370 52nd St. SE, Grand Rapids, MI 49512, USA. This is a neat collection to have - highly recommended.

6. "Book and Glasses" and the "Bridge" are clipart and photo, respectively, included with HiJaak Pro, version 2, by Inset Systems, 71 Commerce Drive, Brookfield, CT 06804.

7. "ASCIT" is the ray-traced, chisled logo of the Arkansas Society for Computer and Information technology (ASCIT) (c) 1984 by ASCIT. url=

If I've left anything out, mea culpa. hlb

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