Other
Project Gutenberg: Jennie Gerhardt by Theodore Dreiser [Full Text]
Dreiser's second book, much more popular than his first when published, is available here from Project Gutenberg Australia.
Washington State University
Washington State University: American Authors: Theodore Dreiser (1871 1945)
This site has a picture, biographical information, and links on Theodore Dreiser. A good place to find links to full-texts of his work.
Other
Self knowlege.com: Sister Carrie
SelfKnowlege.com presents links about Dreiser's novel "Sister Carrie" as well as search engine results for Dreiser.