At 06:06 PM 4/11/2013, Mike Loewen wrote: Yes, that's the one. I hadn't seen digitalmonalisa.com before. It is owned by a Andrew Patros. Does anyone recognize his name and know why he made it? At first I thought he was selling prints. It says "Mona by the Numbers" was reproduced on a "diazo printing machine." In the PDF on the site, it also says "Peterson used his EYE [a flying spot scanner] to scan a 35mm slide of the Mona Lisa, and then, using a specially designed character set, played the scan back onto a 30 inch Cal Comp plotter. The 30 inch monochrome playback sparked a mini collecting frenzy all over the country." The Rostenbach site says the original digitized material was at 12 bits of gray, but that he worked with an 8 bit version. Nelson's "Computer Lib" says each spot was 100 levels, which makes me wonder if he wasn't misconstruing "percents" as levels. So as I understand it, diazo was a copying technology that made copies of the original plotter print. Does that account for the faded orange color of the surviving prints? <http://www.vintchip.com/DOCUMENTS/monanumbers/mona.html>http://www.vintchip.com/DOCUMENTS/monanumbers/mona.html has a nice closeup of the bottom of an original. That site is kept by a Greg Barber. I'd love to get an original. Does anyone recall them ever coming up for sale? Barring that, I'm tempted to recreate it in Illustrator so vector reproductions could be made. - John