TeX by Topic: back in print
The very recommendable book TeX by Topic by Victor Eijkhout, originally published by Addison-Wesley 1991, is now available printed and bound from lulu.com. The author himself announced it today in the usenet group comp.text.tex.
Even if it’s freely available I recommend to purchase this really great book to support the author. And of course to have a printed version. Its 319 pages are paperback bound to keep the price low at €11.30.