"links to downloadable editions of the text of Homeland. These downloads are licensed under a Creative Commons Attribution-Noncommercial-NoDerivs license, which lets you share it, provided that you do so on a noncommercial basis. If you'd like to make a remix, please get in touch with us. "

http://craphound.com/homeland/download/

Most of his ebooks for free here:

http://manybooks.net/authors/doctorow.html