Online Mathematics Textbooks, a link list to higher math texts http://www.math.gatech.edu/~cain/textbooks/onlinebooks.html Online Statistics Textbooks http://www.isixsigma.com/st/online_textbooks/ Comprehensive listing of freely available online textbooks for undergraduated and graduate Mathematics and Physics http://homepages.nyu.edu/~jmg336/html/mathematics.html Online Math & Science Texts http://spot.colorado.edu/~dubin/bookmarks/b/1240.html Textbooks, Lectures & Tutorials in Mathematics http://www.geocities.com/alex_stef/mylist.html