There is a famous photo on Wikimedia commons, of what purports to be Ken Thompson & Dennis Ritchie in front of a PDP-11, presumably working on UNIX. The problem is that the seated person doesn't look like either of them. And he is clean-shaven. Could it be Bjarne Stroustrup? Does anyone recall seeing T&R w/o facial hair? Any help in tracking this down would be much appreciated! The photo has been reprinted in many places, and I'd like to track this down before I inadvertently propagate an error. https://commons.wikimedia.org/wiki/File:Ken_Thompson_(sitting)_and_Dennis_Ri... Paul E. Ceruzzi Curator, Division of Space History National Air and Space Museum MRC 311, PO Box 37012 Smithsonian Institution Washington, DC 20013-7012 www.ceruzzi.com<http://www.ceruzzi.com> ceruzzip@si.edu<mailto:ceruzzip@si.edu> 202-633-2414