I went to Bogota this weekend and found some good books, including: -VAX Architecture Reference Manual (1987) -Samuel Seely, Electron Tube Circuits, 2nd. Ed., McGraw-Hill (1958). This book is a gem. I saw it once at a library a long time ago and had been looking for it ever since. -A. Khinchin, A Course of Mathematical Analysis, translated from the 3rd. russian ed. and published by Hindustan Publishing Corp., Delhi, India. Not CC related but a real find. I paid less than $3 for all three books. Something to calm the collecting itch for a few days :-) . -------------------------------------------------------------- Carlos E. Murillo-Sanchez carlos_murillo(a)nospammers.ieee.org