Open E-books Library

http://ebooksgo.org/ This is the category of e-books available under free licenses such as GFDL, Creative Commons license, Project Gutenberg-tm License, other freedom to use and distribution licenses.

Since this is the category of e-books, there is no search option. You should visit the web site and reach the categorized books.

Reference:
Main Page. (n.d.). Free EBooks Library. Retrieved September 25, 2011, from http://ebooksgo.org/