Free Books
High Quality Books and eBooks of classic literature

http://www.gutenberg.org/
Project Gutenberg Free eBooks - Project Gutenberg offers over 45,000 free ebooks: choose among free ePub books, free kindle books, download them or read them online. 

http://www.booksshouldbefree.com/
BooksShouldBeFree - Free public domain audiobooks and eBooks for iPhone, Kindle and mp3 devices.

http://manybooks.net/
ManyBooks - Ad free eBooks for your iPad, Kindle, or Ebook reader.

https://openlibrary.org/
Open Library - Offers classic literature at your fingertips. Over 1,000,000 free ebook titles available.

http://www.authorama.com/
Authorama.com - Featuring completely free books from a variety of different authors, collected here for you to read online or offline - enjoy the reading. 

http://archive.org/
Archive - Huge repository of text, audio and video files in over 180 languages. 

http://www.europeana.eu/portal/
Europeana - Portal of 2,000 digitized items from European Museums Resource, Digital Library, and Archives Resource.

http://www.feedbooks.com/publicdomain
feedbooks - A list of public domain books available in ePub or pdf format.