Three papers are newly available by gopher and by anonymous ftp from Case Western Reserve University: "The categorical theory generated by a limit sketch", by Michael Barr and Charles Wells. This was formerly called "The category of diagrams". "Varieties of mathematical prose" by Atish Bagchi and Charles Wells. This is not about category theory but was referred to in our paper "The logic of sketches" (also available by gopher & ftp). "Extension theories for categories", by Charles Wells. This is an old paper that was never submitted for publication. I have updated the bibliography as far as I can, but would appreciate it if anyone knows of other suitable references. They are available by gopher in both DVI and Postscript form from the host gopher.cwru.edu, path 1/class/mans/math/pub/wells. Most www clients can get gopher files, and some of the can view Postscript files on screen. The files are also available by anonymous ftp from ftp.cwru.edu in the directory math/wells, under the following filenames: "Varieties of mathematical prose": MATHRITE.DVI, MATHRITE.PS "Extension theories for categories": CATEXT.DVI, CATEXT.PS "The categorical theory generated by a limit sketch": DIAGC.DVI, DIAGC.PS "The logic of sketches": LOGSTR.DVI, LOGSTR.PS I would appreciate knowing if anyone has problems downloading these files. -- Charles Wells Department of Mathematics, Case Western Reserve University 10900 Euclid Avenue, Cleveland, OH 44106-7058, USA 216 368 2893