A Quarter Century of Unix by Peter H. Salus http://shop.barnesandnoble.com/booksearch/isbnInquiry.asp?userid=4NHE5LKC0T&mscssid=NFG18NL1D2S92H6N001PQJ9XJXCXB8HB&isbn=0201547775 I find this to be an interesting read, covers a lot of ground historically, but not in hardcore coding terms. I'm not plugging barnes and noble, it's just that they had a picture of the cover... jim