Free Science Fiction Classics on the Web (books and audio)

OpenCulture, a great resource for lots of things, has a great list of free science fiction classics available online, in both text and audio formats. 

The books include classics from Asimov, Huxley, Orwell, Orson Welles, and even the Chronicles of Narnia.

This is a great resource for teachers and students to get free copies of the books, and the audio books can help ELL and struggling readers.

Related:

Other resources from Open Culture

http://educationaltechnologyguy.blogspot.com/search/label/open%20culture

http://educationaltechnologyguy.blogspot.com/search/label/openculture 

Free E-Books

The E-Books Directory is a great resource for teachers and students. It contains links to thousands of free e-books, including textbooks, that can save schools money. Instead of purchasing textbooks, and then worrying about damage and loss, schools could use e-books instead. I have only reviewed the science books and there are a lot of really good e-textbooks listed here.

Give it a look. Even if you don't use an e-text as your primary book, your students could use them as references and for extra help.