The Complete 51-Volume Harvard Classics, now officially available free in PDF. Buying a set in print would cost you around $600. Including beautifully edited and presented pre-PC volumes of The Thousand and One Nights; Folk-Lore and Fable: Aesop, Grimm, Andersen; and Epic and Saga. Volume 50 also provides “Introduction, Reader’s Guide, Indexes”. Volume 51 is printed lectures.