Creative Commons and Project Gutenberg

Books 

Romeo and Juliet by William Shakespeare 

http://www.gutenberg.org/ebooks/1513

Can be formatted as an HTML, for a kindle, an EPUB, and plain text. 

Pride and Prejudice by Jane Austen

http://www.gutenberg.org/ebooks/1342

Can be formatted as plain text, kindle, EPUB, HTML, PDF. 

Alice's Adventures in Wonderland by Lewis Carroll

http://www.gutenberg.org/ebooks/11

Can be formatted as plain text, kindle, EPUB, HTML, and PDF.