Open Book Library – Over a million public domain ebooks to download or read online, plus an open lending library collection of modern ebook fiction and non fiction
Bartleby.com – Harvard classics, reference texts, historic essays, poetry, and other literary works
The Internet Archive – Access to historic and contemporary audio, music, and digitized video collections
Librivox – Public domain books recorded by volunteers and available for online listening
Colorado Talking Book Library – A free service to Coloradans of all ages who are unable to read standard print material due to visual, physical or learning disabilities. CTBL provides audio, Braille and large-print books and magazines.