In view of the continuing interest in Alexander's Manuscript with that title, and the recent articles in Notices AMS on Grothendieck, I have made a short web page giving giving some information on how that MS came about. This also explains why PS is in English. http://www.bangor.ac.uk/~mas010/purs-stacks.html Ronnie Brown http://www.bangor.ac.uk/~mas010 By the way, the following is the new URL of the updated CPM site http://www.popmath.org.uk though the old one in informatics works. Anyone linked to part of the tree rooted at http://www.bangor.ac.uk/cpm/ should update. 22-Nov-2004 16:52:19 -0400,2600;000000000000-00000000