Read Books Online

Although this site has a limited number of books available, those on the site can be listened to directly from the site.  They also have an arrangement with XLibris to arrange to have ebook chapters emailed to participants who want to read ebooks in a serialized manner. 

World Public Library

For $8.95 a year, you get unlimited downloads of MP3 and PDF files of over 630,000 titles.

Baen Free Library

Baen’s site has a nice selection of books, free to download.

eBook Giant

Over 17,000 free eBooks to download

Planet PDF

This site has a wealth of information about PDF documents, but perhaps more important to teachers, it also houses a bunch of classic books in PDF for downloading and then accessing on the computer or printing out.

Alex Catalogue

The Alex Catalogue of Electronic Texts is a collection of about 14,000 “classic” public domain documents from American and English literature as well as Western philosophy.

Bibliomania
Bibliomania brings you an extensive library of reference books, biographies, classic non-fiction and religious texts. Bibliomania's Study Section contains study guides that are a great way to get into a book or play, . You will need to register to access them but it is quick, painless and free! Bookyards Library to the World
Bookyards is your online public library to the world with a large selection of free digital books, ebooks, and journals, plus the largest collection of reference materials and educational resources for your educational and personal growth. 

Bookshare
Bookshare.org gives print disabled people in the United States legal access to over 34,175 books and 150 periodicals that are converted to Braille, large print or text to speech audio files.

Free Classic AudioBooks. Digital narration for the 21st Century

Free classic audiobook downloads in mp3 audio and ipod audio book format.

Knowledge Rush
The Knowledgerush.com book directory is a catalog of free books available on the internet. 

Many Books!
This website offers loads of books for downloads to MP3 players, PDA, or eBook reader.

The Net Library 
This site of the World Public Library Consortia provides the world's largest (by their claim) ebook collection of classic literature.

Light up Your Brain 

Audio stories, games and links for kids.

The Online Books Page
The Online Books Page is a website that facilitates access to books that are freely readable over the Internet. It also aims to encourage the development of such online books, for the benefit and edification of all.

Project Gutenburg
Project Gutenberg is the first and largest single collection of free electronic books, or eBooks. Michael Hart, founder of Project Gutenberg, invented eBooks in 1971 and continues to inspire the creation of eBooks and related technologies today.

ReadPrint
ReadPrint.com is a free online library offering ebooks that are in the public domain.  The text appears online, but can be printed.  The site also offers coupons for a number of different companies.

University of Virginia

Many of the materials on this site are available only to the UVA community, but it is worth a look.

World Public Library Association

World Public Library Consortia, Classic Literature Online, World's Largest eBook Collection, ebooks, free books, books, book, ebook, PDF ebooks, adobe, classics

Wowio

This site's logo/motto is "Free books - free minds".  Their booklist is amazing, including more than just books in the public domain.  They state ": WOWIO is a new kind of online bookstore that enables readers to download ebooks for free, using commercial sponsorships to compensate authors and publishers.

Bartleby Great Books Online

The preeminent Internet publisher of literature, reference, and verse, providing students, researchers, and the intellectually curious with unlimited access to books and information on the Web, free of charge.