"A long time ago, someone posted here a link to a book on lisp that went out of press and thus was being offered for free as pdf. I downloaded it, but I lost it

"A long time ago, someone posted here a link to a book on lisp that went out of press and thus was being offered for free as pdf. I downloaded it, but I lost it, and I can't seem to find it again. Could someone please point me to the book again? " Is ISBN "0130305529" it? ~ http://www.paulgraham.com/onlisptext.html http://www.paulgraham.com/onlisptext.html