There's all kinds of classic stuff available online for free, including the immortal Plan 9 From Outer Space.
There's an excellent web site, The Public Domain Review, which has gathered the best of all the free stuff together. Some other fascinating stuff:
Biography and images of Phillis Wheatley a black female slave genius.
An article on, and links to the unique Flatland. I read this when I was 18. Because it's totally trippy.
An amazing Film collection including Battleship Potemkin!
Charming 19th century story books with illustrations including Old French Fairy Tales, from whence I got the illustration below. Good stuff!
