For a number of years, I made most of my papers available at an ftp site at McGill which is now defunct. It was also not always up-to-date. I have a new one that is, for the the being, up-to-date. If you enter http://www.math.mcgill.ca/barr/papers/ in your browser, it will take you to the index, currently by production date. Eventually, I will add a subject index as well. Right now it includes most of my lifetime production (except most of what was published in Lecture Notes) and a few other things such as the Grothendieck translation and some notes on rings of continuous functions by Fine, Gilman, and Lambek from about 1960 that was published by McGill with no copyright notice (anyway, I got Lambek's and Gillman's permissions (but Fine was dead and I could not trace his widow or his daughter). My only connection was that I supervised the texxing of the notes. Michael [For admin and other information see: http://www.mta.ca/~cat-dist/ ]