About a month ago, I inquired whether any of you had a copy of a preprint by that name from 1979. Then I found a copy and offered to send a scan of it to anyone who asked and I sent out maybe 8 or 10 of them. To most of the recipients I noted that in looking at the paper, there were serious problems. Now, aided by John Kennison and Bob Raphael, we have written a new paper, deciphering and thoroughly revising the old one. I invite anyone who is interested to download it from www.math.mcgill.ca/barr/<http://www.math.mcgill.ca/barr/>. All the papers I ever wrote are found there too. Michael Index of pdf files - Mathematics and Statistics<http://www.math.mcgill.ca/barr/> www.math.mcgill.ca 2010–present. Michael Barr, John Kennison, and Robert Raphael, Contractible simplicial objects To appear in a memorial volume honouring Vera Trnkova. Michael Barr, Topological *-autonomous categories, revisited. Tbilisi Math. J., 10.3, 51–64.This is an updated version of Topological *-autonomous categories, Theory Appl. Categories, 16 (2006), 700–708. [For admin and other information see: http://www.mta.ca/~cat-dist/ ]