Borders has created a master list of a ton of free eBooks for download. All in .pdf, no special reader needed to install. There are such titles as:
Bram Stoker - Dracula
Charles Dickens - The Mystery of Edwin Drood
Charles Dickens - Great Expectations
Charles Dickens - A Tale of Two Cities
Courtney Ryley Cooper - Memories of Buffalo Bill
Jane Austen - Pride and Prejudice
Lewis Carroll - Alices Adventures in Wonderland

All free! There are many more available at this link.

'Free eBooks: More Than a Million and Counting' ought to do it - Borders - Books, Music and Movies